text: (function( window, undefined ) {
  
  	'use strict';
  
  	/**
  	 * Initialise the WP_API.
  	 */
  	function WP_API() {
  		/** @namespace wp.api.models */
  		this.models = {};
  		/** @namespace wp.api.collections */
  		this.collections = {};
  		/** @namespace wp.api.views */
  		this.views = {};
  	}
  
  	/** @namespace wp */
  	window.wp            = window.wp || {};
  	/** @namespace wp.api */
  	wp.api               = wp.api || new WP_API();
  	wp.api.versionString = wp.api.versionString || 'wp/v2/';
  
  	// Alias _includes to _.contains, ensuring it is available if lodash is used.
  	if ( ! _.isFunction( _.includes ) && _.isFunction( _.contains ) ) {
  	  _.includes = _.contains;
  	}
  
  })( window );
  
  (function( window, undefined ) {
  
  	'use strict';
  
  	var pad, r;
  
  	/** @namespace wp */
  	window.wp = window.wp || {};
  	/** @namespace wp.api */
  	wp.api = wp.api || {};
  	/** @namespace wp.api.utils */
  	wp.api.utils = wp.api.utils || {};
  
  	/**
  	 * Determine model based on API route.
  	 *
  	 * @param {string} route    The API route.
  	 *
  	 * @return {Backbone Model} The model found at given route. Undefined if not found.
  	 */
  	wp.api.getModelByRoute = function( route ) {
  		return _.find( wp.api.models, function( model ) {
  			return model.prototype.route && route === model.prototype.route.index;
  		} );
  	};
  
  	/**
  	 * Determine collection based on API route.
  	 *
  	 * @param {string} route    The API route.
  	 *
  	 * @return {Backbone Model} The collection found at given route. Undefined if not found.
  	 */
  	wp.api.getCollectionByRoute = function( route ) {
  		return _.find( wp.api.collections, function( collection ) {
  			return collection.prototype.route && route === collection.prototype.route.index;
  		} );
  	};
  
  
  	/**
  	 * ECMAScript 5 shim, adapted from MDN.
  	 * @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString
  	 */
  	if ( ! Date.prototype.toISOString ) {
  		pad = function( number ) {
  			r = String( number );
  			if ( 1 === r.length ) {
  				r = '0' + r;
  			}
  
  			return r;
  		};
  
  		Date.prototype.toISOString = function() {
  			return this.getUTCFullYear() +
  				'-' + pad( this.getUTCMonth() + 1 ) +
  				'-' + pad( this.getUTCDate() ) +
  				'T' + pad( this.getUTCHours() ) +
  				':' + pad( this.getUTCMinutes() ) +
  				':' + pad( this.getUTCSeconds() ) +
  				'.' + String( ( this.getUTCMilliseconds() / 1000 ).toFixed( 3 ) ).slice( 2, 5 ) +
  				'Z';
  		};
  	}
  
  	/**
  	 * Parse date into ISO8601 format.
  	 *
  	 * @param {Date} date.
  	 */
  	wp.api.utils.parseISO8601 = function( date ) {
  		var timestamp, struct, i, k,
  			minutesOffset = 0,
  			numericKeys = [ 1, 4, 5, 6, 7, 10, 11 ];
  
  		// ES5 §15.9.4.2 states that the string should attempt to be parsed as a Date Time String Format string
  		// before falling back to any implementation-specific date parsing, so that’s what we do, even if native
  		// implementations could be faster.
  		//              1 YYYY                2 MM       3 DD           4 HH    5 mm       6 ss        7 msec        8 Z 9 ±    10 tzHH    11 tzmm
  		if ( ( struct = /^(\d{4}|[+\-]\d{6})(?:-(\d{2})(?:-(\d{2}))?)?(?:T(\d{2}):(\d{2})(?::(\d{2})(?:\.(\d{3}))?)?(?:(Z)|([+\-])(\d{2})(?::(\d{2}))?)?)?$/.exec( date ) ) ) {
  
  			// Avoid NaN timestamps caused by “undefined” values being passed to Date.UTC.
  			for ( i = 0; ( k = numericKeys[i] ); ++i ) {
  				struct[k] = +struct[k] || 0;
  			}
  
  			// Allow undefined days and months.
  			struct[2] = ( +struct[2] || 1 ) - 1;
  			struct[3] = +struct[3] || 1;
  
  			if ( 'Z' !== struct[8]  && undefined !== struct[9] ) {
  				minutesOffset = struct[10] * 60 + struct[11];
  
  				if ( '+' === struct[9] ) {
  					minutesOffset = 0 - minutesOffset;
  				}
  			}
  
  			timestamp = Date.UTC( struct[1], struct[2], struct[3], struct[4], struct[5] + minutesOffset, struct[6], struct[7] );
  		} else {
  			timestamp = Date.parse ? Date.parse( date ) : NaN;
  		}
  
  		return timestamp;
  	};
  
  	/**
  	 * Helper function for getting the root URL.
  	 * @return {[type]} [description]
  	 */
  	wp.api.utils.getRootUrl = function() {
  		return window.location.origin ?
  			window.location.origin + '/' :
  			window.location.protocol + '/' + window.location.host + '/';
  	};
  
  	/**
  	 * Helper for capitalizing strings.
  	 */
  	wp.api.utils.capitalize = function( str ) {
  		if ( _.isUndefined( str ) ) {
  			return str;
  		}
  		return str.charAt( 0 ).toUpperCase() + str.slice( 1 );
  	};
  
  	/**
  	 * Helper function that capitalizes the first word and camel cases any words starting
  	 * after dashes, removing the dashes.
  	 */
  	wp.api.utils.capitalizeAndCamelCaseDashes = function( str ) {
  		if ( _.isUndefined( str ) ) {
  			return str;
  		}
  		str = wp.api.utils.capitalize( str );
  
  		return wp.api.utils.camelCaseDashes( str );
  	};
  
  	/**
  	 * Helper function to camel case the letter after dashes, removing the dashes.
  	 */
  	wp.api.utils.camelCaseDashes = function( str ) {
  		return str.replace( /-([a-z])/g, function( g ) {
  			return g[ 1 ].toUpperCase();
  		} );
  	};
  
  	/**
  	 * Extract a route part based on negative index.
  	 *
  	 * @param {string}   route          The endpoint route.
  	 * @param {int}      part           The number of parts from the end of the route to retrieve. Default 1.
  	 *                                  Example route `/a/b/c`: part 1 is `c`, part 2 is `b`, part 3 is `a`.
  	 * @param {string}  [versionString] Version string, defaults to `wp.api.versionString`.
  	 * @param {boolean} [reverse]       Whether to reverse the order when extracting the route part. Optional, default false.
  	 */
  	wp.api.utils.extractRoutePart = function( route, part, versionString, reverse ) {
  		var routeParts;
  
  		part = part || 1;
  		versionString = versionString || wp.api.versionString;
  
  		// Remove versions string from route to avoid returning it.
  		if ( 0 === route.indexOf( '/' + versionString ) ) {
  			route = route.substr( versionString.length + 1 );
  		}
  
  		routeParts = route.split( '/' );
  		if ( reverse ) {
  			routeParts = routeParts.reverse();
  		}
  		if ( _.isUndefined( routeParts[ --part ] ) ) {
  			return '';
  		}
  		return routeParts[ part ];
  	};
  
  	/**
  	 * Extract a parent name from a passed route.
  	 *
  	 * @param {string} route The route to extract a name from.
  	 */
  	wp.api.utils.extractParentName = function( route ) {
  		var name,
  			lastSlash = route.lastIndexOf( '_id>[\\d]+)/' );
  
  		if ( lastSlash < 0 ) {
  			return '';
  		}
  		name = route.substr( 0, lastSlash - 1 );
  		name = name.split( '/' );
  		name.pop();
  		name = name.pop();
  		return name;
  	};
  
  	/**
  	 * Add args and options to a model prototype from a route's endpoints.
  	 *
  	 * @param {array}  routeEndpoints Array of route endpoints.
  	 * @param {Object} modelInstance  An instance of the model (or collection)
  	 *                                to add the args to.
  	 */
  	wp.api.utils.decorateFromRoute = function( routeEndpoints, modelInstance ) {
  
  		/**
  		 * Build the args based on route endpoint data.
  		 */
  		_.each( routeEndpoints, function( routeEndpoint ) {
  
  			// Add post and edit endpoints as model args.
  			if ( _.includes( routeEndpoint.methods, 'POST' ) || _.includes( routeEndpoint.methods, 'PUT' ) ) {
  
  				// Add any non empty args, merging them into the args object.
  				if ( ! _.isEmpty( routeEndpoint.args ) ) {
  
  					// Set as default if no args yet.
  					if ( _.isEmpty( modelInstance.prototype.args ) ) {
  						modelInstance.prototype.args = routeEndpoint.args;
  					} else {
  
  						// We already have args, merge these new args in.
  						modelInstance.prototype.args = _.extend( modelInstance.prototype.args, routeEndpoint.args );
  					}
  				}
  			} else {
  
  				// Add GET method as model options.
  				if ( _.includes( routeEndpoint.methods, 'GET' ) ) {
  
  					// Add any non empty args, merging them into the defaults object.
  					if ( ! _.isEmpty( routeEndpoint.args ) ) {
  
  						// Set as default if no defaults yet.
  						if ( _.isEmpty( modelInstance.prototype.options ) ) {
  							modelInstance.prototype.options = routeEndpoint.args;
  						} else {
  
  							// We already have options, merge these new args in.
  							modelInstance.prototype.options = _.extend( modelInstance.prototype.options, routeEndpoint.args );
  						}
  					}
  
  				}
  			}
  
  		} );
  
  	};
  
  	/**
  	 * Add mixins and helpers to models depending on their defaults.
  	 *
  	 * @param {Backbone Model} model          The model to attach helpers and mixins to.
  	 * @param {string}         modelClassName The classname of the constructed model.
  	 * @param {Object} 	       loadingObjects An object containing the models and collections we are building.
  	 */
  	wp.api.utils.addMixinsAndHelpers = function( model, modelClassName, loadingObjects ) {
  
  		var hasDate = false,
  
  			/**
  			 * Array of parseable dates.
  			 *
  			 * @type {string[]}.
  			 */
  			parseableDates = [ 'date', 'modified', 'date_gmt', 'modified_gmt' ],
  
  			/**
  			 * Mixin for all content that is time stamped.
  			 *
  			 * This mixin converts between mysql timestamps and JavaScript Dates when syncing a model
  			 * to or from the server. For example, a date stored as `2015-12-27T21:22:24` on the server
  			 * gets expanded to `Sun Dec 27 2015 14:22:24 GMT-0700 (MST)` when the model is fetched.
  			 *
  			 * @type {{toJSON: toJSON, parse: parse}}.
  			 */
  			TimeStampedMixin = {
  
  				/**
  				 * Prepare a JavaScript Date for transmitting to the server.
  				 *
  				 * This helper function accepts a field and Date object. It converts the passed Date
  				 * to an ISO string and sets that on the model field.
  				 *
  				 * @param {Date}   date   A JavaScript date object. WordPress expects dates in UTC.
  				 * @param {string} field  The date field to set. One of 'date', 'date_gmt', 'date_modified'
  				 *                        or 'date_modified_gmt'. Optional, defaults to 'date'.
  				 */
  				setDate: function( date, field ) {
  					var theField = field || 'date';
  
  					// Don't alter non parsable date fields.
  					if ( _.indexOf( parseableDates, theField ) < 0 ) {
  						return false;
  					}
  
  					this.set( theField, date.toISOString() );
  				},
  
  				/**
  				 * Get a JavaScript Date from the passed field.
  				 *
  				 * WordPress returns 'date' and 'date_modified' in the timezone of the server as well as
  				 * UTC dates as 'date_gmt' and 'date_modified_gmt'. Draft posts do not include UTC dates.
  				 *
  				 * @param {string} field  The date field to set. One of 'date', 'date_gmt', 'date_modified'
  				 *                        or 'date_modified_gmt'. Optional, defaults to 'date'.
  				 */
  				getDate: function( field ) {
  					var theField   = field || 'date',
  						theISODate = this.get( theField );
  
  					// Only get date fields and non null values.
  					if ( _.indexOf( parseableDates, theField ) < 0 || _.isNull( theISODate ) ) {
  						return false;
  					}
  
  					return new Date( wp.api.utils.parseISO8601( theISODate ) );
  				}
  			},
  
  			/**
  			 * Build a helper function to retrieve related model.
  			 *
  			 * @param  {string} parentModel      The parent model.
  			 * @param  {int}    modelId          The model ID if the object to request
  			 * @param  {string} modelName        The model name to use when constructing the model.
  			 * @param  {string} embedSourcePoint Where to check the embedds object for _embed data.
  			 * @param  {string} embedCheckField  Which model field to check to see if the model has data.
  			 *
  			 * @return {Deferred.promise}        A promise which resolves to the constructed model.
  			 */
  			buildModelGetter = function( parentModel, modelId, modelName, embedSourcePoint, embedCheckField ) {
  				var getModel, embeddeds, attributes, deferred;
  
  				deferred  = jQuery.Deferred();
  				embeddeds = parentModel.get( '_embedded' ) || {};
  
  				// Verify that we have a valid object id.
  				if ( ! _.isNumber( modelId ) || 0 === modelId ) {
  					deferred.reject();
  					return deferred;
  				}
  
  				// If we have embedded object data, use that when constructing the getModel.
  				if ( embeddeds[ embedSourcePoint ] ) {
  					attributes = _.findWhere( embeddeds[ embedSourcePoint ], { id: modelId } );
  				}
  
  				// Otherwise use the modelId.
  				if ( ! attributes ) {
  					attributes = { id: modelId };
  				}
  
  				// Create the new getModel model.
  				getModel = new wp.api.models[ modelName ]( attributes );
  
  				if ( ! getModel.get( embedCheckField ) ) {
  					getModel.fetch( {
  						success: function( getModel ) {
  							deferred.resolve( getModel );
  						},
  						error: function( getModel, response ) {
  							deferred.reject( response );
  						}
  					} );
  				} else {
  					// Resolve with the embedded model.
  					deferred.resolve( getModel );
  				}
  
  				// Return a promise.
  				return deferred.promise();
  			},
  
  			/**
  			 * Build a helper to retrieve a collection.
  			 *
  			 * @param  {string} parentModel      The parent model.
  			 * @param  {string} collectionName   The name to use when constructing the collection.
  			 * @param  {string} embedSourcePoint Where to check the embedds object for _embed data.
  			 * @param  {string} embedIndex       An addiitonal optional index for the _embed data.
  			 *
  			 * @return {Deferred.promise}        A promise which resolves to the constructed collection.
  			 */
  			buildCollectionGetter = function( parentModel, collectionName, embedSourcePoint, embedIndex ) {
  				/**
  				 * Returns a promise that resolves to the requested collection
  				 *
  				 * Uses the embedded data if available, otherwises fetches the
  				 * data from the server.
  				 *
  				 * @return {Deferred.promise} promise Resolves to a wp.api.collections[ collectionName ]
  				 * collection.
  				 */
  				var postId, embeddeds, getObjects,
  					classProperties = '',
  					properties      = '',
  					deferred        = jQuery.Deferred();
  
  				postId    = parentModel.get( 'id' );
  				embeddeds = parentModel.get( '_embedded' ) || {};
  
  				// Verify that we have a valid post id.
  				if ( ! _.isNumber( postId ) || 0 === postId ) {
  					deferred.reject();
  					return deferred;
  				}
  
  				// If we have embedded getObjects data, use that when constructing the getObjects.
  				if ( ! _.isUndefined( embedSourcePoint ) && ! _.isUndefined( embeddeds[ embedSourcePoint ] ) ) {
  
  					// Some embeds also include an index offset, check for that.
  					if ( _.isUndefined( embedIndex ) ) {
  
  						// Use the embed source point directly.
  						properties = embeddeds[ embedSourcePoint ];
  					} else {
  
  						// Add the index to the embed source point.
  						properties = embeddeds[ embedSourcePoint ][ embedIndex ];
  					}
  				} else {
  
  					// Otherwise use the postId.
  					classProperties = { parent: postId };
  				}
  
  				// Create the new getObjects collection.
  				getObjects = new wp.api.collections[ collectionName ]( properties, classProperties );
  
  				// If we didn’t have embedded getObjects, fetch the getObjects data.
  				if ( _.isUndefined( getObjects.models[0] ) ) {
  					getObjects.fetch( {
  						success: function( getObjects ) {
  
  							// Add a helper 'parent_post' attribute onto the model.
  							setHelperParentPost( getObjects, postId );
  							deferred.resolve( getObjects );
  						},
  						error: function( getModel, response ) {
  							deferred.reject( response );
  						}
  					} );
  				} else {
  
  					// Add a helper 'parent_post' attribute onto the model.
  					setHelperParentPost( getObjects, postId );
  					deferred.resolve( getObjects );
  				}
  
  				// Return a promise.
  				return deferred.promise();
  
  			},
  
  			/**
  			 * Set the model post parent.
  			 */
  			setHelperParentPost = function( collection, postId ) {
  
  				// Attach post_parent id to the collection.
  				_.each( collection.models, function( model ) {
  					model.set( 'parent_post', postId );
  				} );
  			},
  
  			/**
  			 * Add a helper function to handle post Meta.
  			 */
  			MetaMixin = {
  
  				/**
  				 * Get meta by key for a post.
  				 *
  				 * @param {string} key The meta key.
  				 *
  				 * @return {object} The post meta value.
  				 */
  				getMeta: function( key ) {
  					var metas = this.get( 'meta' );
  					return metas[ key ];
  				},
  
  				/**
  				 * Get all meta key/values for a post.
  				 *
  				 * @return {object} The post metas, as a key value pair object.
  				 */
  				getMetas: function() {
  					return this.get( 'meta' );
  				},
  
  				/**
  				 * Set a group of meta key/values for a post.
  				 *
  				 * @param {object} meta The post meta to set, as key/value pairs.
  				 */
  				setMetas: function( meta ) {
  					var metas = this.get( 'meta' );
  					_.extend( metas, meta );
  					this.set( 'meta', metas );
  				},
  
  				/**
  				 * Set a single meta value for a post, by key.
  				 *
  				 * @param {string} key   The meta key.
  				 * @param {object} value The meta value.
  				 */
  				setMeta: function( key, value ) {
  					var metas = this.get( 'meta' );
  					metas[ key ] = value;
  					this.set( 'meta', metas );
  				}
  			},
  
  			/**
  			 * Add a helper function to handle post Revisions.
  			 */
  			RevisionsMixin = {
  				getRevisions: function() {
  					return buildCollectionGetter( this, 'PostRevisions' );
  				}
  			},
  
  			/**
  			 * Add a helper function to handle post Tags.
  			 */
  			TagsMixin = {
  
  				/**
  				 * Get the tags for a post.
  				 *
  				 * @return {Deferred.promise} promise Resolves to an array of tags.
  				 */
  				getTags: function() {
  					var tagIds = this.get( 'tags' ),
  						tags  = new wp.api.collections.Tags();
  
  					// Resolve with an empty array if no tags.
  					if ( _.isEmpty( tagIds ) ) {
  						return jQuery.Deferred().resolve( [] );
  					}
  
  					return tags.fetch( { data: { include: tagIds } } );
  				},
  
  				/**
  				 * Set the tags for a post.
  				 *
  				 * Accepts an array of tag slugs, or a Tags collection.
  				 *
  				 * @param {array|Backbone.Collection} tags The tags to set on the post.
  				 *
  				 */
  				setTags: function( tags ) {
  					var allTags, newTag,
  						self = this,
  						newTags = [];
  
  					if ( _.isString( tags ) ) {
  						return false;
  					}
  
  					// If this is an array of slugs, build a collection.
  					if ( _.isArray( tags ) ) {
  
  						// Get all the tags.
  						allTags = new wp.api.collections.Tags();
  						allTags.fetch( {
  							data:    { per_page: 100 },
  							success: function( alltags ) {
  
  								// Find the passed tags and set them up.
  								_.each( tags, function( tag ) {
  									newTag = new wp.api.models.Tag( alltags.findWhere( { slug: tag } ) );
  
  									// Tie the new tag to the post.
  									newTag.set( 'parent_post', self.get( 'id' ) );
  
  									// Add the new tag to the collection.
  									newTags.push( newTag );
  								} );
  								tags = new wp.api.collections.Tags( newTags );
  								self.setTagsWithCollection( tags );
  							}
  						} );
  
  					} else {
  						this.setTagsWithCollection( tags );
  					}
  				},
  
  				/**
  				 * Set the tags for a post.
  				 *
  				 * Accepts a Tags collection.
  				 *
  				 * @param {array|Backbone.Collection} tags The tags to set on the post.
  				 *
  				 */
  				setTagsWithCollection: function( tags ) {
  
  					// Pluck out the category ids.
  					this.set( 'tags', tags.pluck( 'id' ) );
  					return this.save();
  				}
  			},
  
  			/**
  			 * Add a helper function to handle post Categories.
  			 */
  			CategoriesMixin = {
  
  				/**
  				 * Get a the categories for a post.
  				 *
  				 * @return {Deferred.promise} promise Resolves to an array of categories.
  				 */
  				getCategories: function() {
  					var categoryIds = this.get( 'categories' ),
  						categories  = new wp.api.collections.Categories();
  
  					// Resolve with an empty array if no categories.
  					if ( _.isEmpty( categoryIds ) ) {
  						return jQuery.Deferred().resolve( [] );
  					}
  
  					return categories.fetch( { data: { include: categoryIds } } );
  				},
  
  				/**
  				 * Set the categories for a post.
  				 *
  				 * Accepts an array of category slugs, or a Categories collection.
  				 *
  				 * @param {array|Backbone.Collection} categories The categories to set on the post.
  				 *
  				 */
  				setCategories: function( categories ) {
  					var allCategories, newCategory,
  						self = this,
  						newCategories = [];
  
  					if ( _.isString( categories ) ) {
  						return false;
  					}
  
  					// If this is an array of slugs, build a collection.
  					if ( _.isArray( categories ) ) {
  
  						// Get all the categories.
  						allCategories = new wp.api.collections.Categories();
  						allCategories.fetch( {
  							data:    { per_page: 100 },
  							success: function( allcats ) {
  
  								// Find the passed categories and set them up.
  								_.each( categories, function( category ) {
  									newCategory = new wp.api.models.Category( allcats.findWhere( { slug: category } ) );
  
  									// Tie the new category to the post.
  									newCategory.set( 'parent_post', self.get( 'id' ) );
  
  									// Add the new category to the collection.
  									newCategories.push( newCategory );
  								} );
  								categories = new wp.api.collections.Categories( newCategories );
  								self.setCategoriesWithCollection( categories );
  							}
  						} );
  
  					} else {
  						this.setCategoriesWithCollection( categories );
  					}
  
  				},
  
  				/**
  				 * Set the categories for a post.
  				 *
  				 * Accepts Categories collection.
  				 *
  				 * @param {array|Backbone.Collection} categories The categories to set on the post.
  				 *
  				 */
  				setCategoriesWithCollection: function( categories ) {
  
  					// Pluck out the category ids.
  					this.set( 'categories', categories.pluck( 'id' ) );
  					return this.save();
  				}
  			},
  
  			/**
  			 * Add a helper function to retrieve the author user model.
  			 */
  			AuthorMixin = {
  				getAuthorUser: function() {
  					return buildModelGetter( this, this.get( 'author' ), 'User', 'author', 'name' );
  				}
  			},
  
  			/**
  			 * Add a helper function to retrieve the featured media.
  			 */
  			FeaturedMediaMixin = {
  				getFeaturedMedia: function() {
  					return buildModelGetter( this, this.get( 'featured_media' ), 'Media', 'wp:featuredmedia', 'source_url' );
  				}
  			};
  
  		// Exit if we don't have valid model defaults.
  		if ( _.isUndefined( model.prototype.args ) ) {
  			return model;
  		}
  
  		// Go thru the parsable date fields, if our model contains any of them it gets the TimeStampedMixin.
  		_.each( parseableDates, function( theDateKey ) {
  			if ( ! _.isUndefined( model.prototype.args[ theDateKey ] ) ) {
  				hasDate = true;
  			}
  		} );
  
  		// Add the TimeStampedMixin for models that contain a date field.
  		if ( hasDate ) {
  			model = model.extend( TimeStampedMixin );
  		}
  
  		// Add the AuthorMixin for models that contain an author.
  		if ( ! _.isUndefined( model.prototype.args.author ) ) {
  			model = model.extend( AuthorMixin );
  		}
  
  		// Add the FeaturedMediaMixin for models that contain a featured_media.
  		if ( ! _.isUndefined( model.prototype.args.featured_media ) ) {
  			model = model.extend( FeaturedMediaMixin );
  		}
  
  		// Add the CategoriesMixin for models that support categories collections.
  		if ( ! _.isUndefined( model.prototype.args.categories ) ) {
  			model = model.extend( CategoriesMixin );
  		}
  
  		// Add the MetaMixin for models that support meta.
  		if ( ! _.isUndefined( model.prototype.args.meta ) ) {
  			model = model.extend( MetaMixin );
  		}
  
  		// Add the TagsMixin for models that support tags collections.
  		if ( ! _.isUndefined( model.prototype.args.tags ) ) {
  			model = model.extend( TagsMixin );
  		}
  
  		// Add the RevisionsMixin for models that support revisions collections.
  		if ( ! _.isUndefined( loadingObjects.collections[ modelClassName + 'Revisions' ] ) ) {
  			model = model.extend( RevisionsMixin );
  		}
  
  		return model;
  	};
  
  })( window );
  
  /* global wpApiSettings:false */
  
  // Suppress warning about parse function's unused "options" argument:
  /* jshint unused:false */
  (function() {
  
  	'use strict';
  
  	var wpApiSettings = window.wpApiSettings || {},
  	trashableTypes    = [ 'Comment', 'Media', 'Comment', 'Post', 'Page', 'Status', 'Taxonomy', 'Type' ];
  
  	/**
  	 * Backbone base model for all models.
  	 */
  	wp.api.WPApiBaseModel = Backbone.Model.extend(
  		/** @lends WPApiBaseModel.prototype  */
  		{
  
  			// Initialize the model.
  			initialize: function() {
  
  				/**
  				* Types that don't support trashing require passing ?force=true to delete.
  				*
  				*/
  				if ( -1 === _.indexOf( trashableTypes, this.name ) ) {
  					this.requireForceForDelete = true;
  				}
  			},
  
  			/**
  			 * Set nonce header before every Backbone sync.
  			 *
  			 * @param {string} method.
  			 * @param {Backbone.Model} model.
  			 * @param {{beforeSend}, *} options.
  			 * @returns {*}.
  			 */
  			sync: function( method, model, options ) {
  				var beforeSend;
  
  				options = options || {};
  
  				// Remove date_gmt if null.
  				if ( _.isNull( model.get( 'date_gmt' ) ) ) {
  					model.unset( 'date_gmt' );
  				}
  
  				// Remove slug if empty.
  				if ( _.isEmpty( model.get( 'slug' ) ) ) {
  					model.unset( 'slug' );
  				}
  
  				if ( _.isFunction( model.nonce ) && ! _.isEmpty( model.nonce() ) ) {
  					beforeSend = options.beforeSend;
  
  					// @todo enable option for jsonp endpoints
  					// options.dataType = 'jsonp';
  
  					// Include the nonce with requests.
  					options.beforeSend = function( xhr ) {
  						xhr.setRequestHeader( 'X-WP-Nonce', model.nonce() );
  
  						if ( beforeSend ) {
  							return beforeSend.apply( this, arguments );
  						}
  					};
  
  					// Update the nonce when a new nonce is returned with the response.
  					options.complete = function( xhr ) {
  						var returnedNonce = xhr.getResponseHeader( 'X-WP-Nonce' );
  
  						if ( returnedNonce && _.isFunction( model.nonce ) && model.nonce() !== returnedNonce ) {
  							model.endpointModel.set( 'nonce', returnedNonce );
  						}
  					};
  				}
  
  				// Add '?force=true' to use delete method when required.
  				if ( this.requireForceForDelete && 'delete' === method ) {
  					model.url = model.url() + '?force=true';
  				}
  				return Backbone.sync( method, model, options );
  			},
  
  			/**
  			 * Save is only allowed when the PUT OR POST methods are available for the endpoint.
  			 */
  			save: function( attrs, options ) {
  
  				// Do we have the put method, then execute the save.
  				if ( _.includes( this.methods, 'PUT' ) || _.includes( this.methods, 'POST' ) ) {
  
  					// Proxy the call to the original save function.
  					return Backbone.Model.prototype.save.call( this, attrs, options );
  				} else {
  
  					// Otherwise bail, disallowing action.
  					return false;
  				}
  			},
  
  			/**
  			 * Delete is only allowed when the DELETE method is available for the endpoint.
  			 */
  			destroy: function( options ) {
  
  				// Do we have the DELETE method, then execute the destroy.
  				if ( _.includes( this.methods, 'DELETE' ) ) {
  
  					// Proxy the call to the original save function.
  					return Backbone.Model.prototype.destroy.call( this, options );
  				} else {
  
  					// Otherwise bail, disallowing action.
  					return false;
  				}
  			}
  
  		}
  	);
  
  	/**
  	 * API Schema model. Contains meta information about the API.
  	 */
  	wp.api.models.Schema = wp.api.WPApiBaseModel.extend(
  		/** @lends Schema.prototype  */
  		{
  			defaults: {
  				_links: {},
  				namespace: null,
  				routes: {}
  			},
  
  			initialize: function( attributes, options ) {
  				var model = this;
  				options = options || {};
  
  				wp.api.WPApiBaseModel.prototype.initialize.call( model, attributes, options );
  
  				model.apiRoot = options.apiRoot || wpApiSettings.root;
  				model.versionString = options.versionString || wpApiSettings.versionString;
  			},
  
  			url: function() {
  				return this.apiRoot + this.versionString;
  			}
  		}
  	);
  })();
  
  ( function() {
  
  	'use strict';
  
  	var wpApiSettings = window.wpApiSettings || {};
  
  	/**
  	 * Contains basic collection functionality such as pagination.
  	 */
  	wp.api.WPApiBaseCollection = Backbone.Collection.extend(
  		/** @lends BaseCollection.prototype  */
  		{
  
  			/**
  			 * Setup default state.
  			 */
  			initialize: function( models, options ) {
  				this.state = {
  					data: {},
  					currentPage: null,
  					totalPages: null,
  					totalObjects: null
  				};
  				if ( _.isUndefined( options ) ) {
  					this.parent = '';
  				} else {
  					this.parent = options.parent;
  				}
  			},
  
  			/**
  			 * Extend Backbone.Collection.sync to add nince and pagination support.
  			 *
  			 * Set nonce header before every Backbone sync.
  			 *
  			 * @param {string} method.
  			 * @param {Backbone.Model} model.
  			 * @param {{success}, *} options.
  			 * @returns {*}.
  			 */
  			sync: function( method, model, options ) {
  				var beforeSend, success,
  					self = this;
  
  				options = options || {};
  
  				if ( _.isFunction( model.nonce ) && ! _.isEmpty( model.nonce() ) ) {
  					beforeSend = options.beforeSend;
  
  					// Include the nonce with requests.
  					options.beforeSend = function( xhr ) {
  						xhr.setRequestHeader( 'X-WP-Nonce', model.nonce() );
  
  						if ( beforeSend ) {
  							return beforeSend.apply( self, arguments );
  						}
  					};
  
  					// Update the nonce when a new nonce is returned with the response.
  					options.complete = function( xhr ) {
  						var returnedNonce = xhr.getResponseHeader( 'X-WP-Nonce' );
  
  						if ( returnedNonce && _.isFunction( model.nonce ) && model.nonce() !== returnedNonce ) {
  							model.endpointModel.set( 'nonce', returnedNonce );
  						}
  					};
  				}
  
  				// When reading, add pagination data.
  				if ( 'read' === method ) {
  					if ( options.data ) {
  						self.state.data = _.clone( options.data );
  
  						delete self.state.data.page;
  					} else {
  						self.state.data = options.data = {};
  					}
  
  					if ( 'undefined' === typeof options.data.page ) {
  						self.state.currentPage  = null;
  						self.state.totalPages   = null;
  						self.state.totalObjects = null;
  					} else {
  						self.state.currentPage = options.data.page - 1;
  					}
  
  					success = options.success;
  					options.success = function( data, textStatus, request ) {
  						if ( ! _.isUndefined( request ) ) {
  							self.state.totalPages   = parseInt( request.getResponseHeader( 'x-wp-totalpages' ), 10 );
  							self.state.totalObjects = parseInt( request.getResponseHeader( 'x-wp-total' ), 10 );
  						}
  
  						if ( null === self.state.currentPage ) {
  							self.state.currentPage = 1;
  						} else {
  							self.state.currentPage++;
  						}
  
  						if ( success ) {
  							return success.apply( this, arguments );
  						}
  					};
  				}
  
  				// Continue by calling Bacckbone's sync.
  				return Backbone.sync( method, model, options );
  			},
  
  			/**
  			 * Fetches the next page of objects if a new page exists.
  			 *
  			 * @param {data: {page}} options.
  			 * @returns {*}.
  			 */
  			more: function( options ) {
  				options = options || {};
  				options.data = options.data || {};
  
  				_.extend( options.data, this.state.data );
  
  				if ( 'undefined' === typeof options.data.page ) {
  					if ( ! this.hasMore() ) {
  						return false;
  					}
  
  					if ( null === this.state.currentPage || this.state.currentPage <= 1 ) {
  						options.data.page = 2;
  					} else {
  						options.data.page = this.state.currentPage + 1;
  					}
  				}
  
  				return this.fetch( options );
  			},
  
  			/**
  			 * Returns true if there are more pages of objects available.
  			 *
  			 * @returns null|boolean.
  			 */
  			hasMore: function() {
  				if ( null === this.state.totalPages ||
  					 null === this.state.totalObjects ||
  					 null === this.state.currentPage ) {
  					return null;
  				} else {
  					return ( this.state.currentPage < this.state.totalPages );
  				}
  			}
  		}
  	);
  
  } )();
  
  ( function() {
  
  	'use strict';
  
  	var Endpoint, initializedDeferreds = {},
  		wpApiSettings = window.wpApiSettings || {};
  
  	/** @namespace wp */
  	window.wp = window.wp || {};
  
  	/** @namespace wp.api */
  	wp.api    = wp.api || {};
  
  	// If wpApiSettings is unavailable, try the default.
  	if ( _.isEmpty( wpApiSettings ) ) {
  		wpApiSettings.root = window.location.origin + '/wp-json/';
  	}
  
  	Endpoint = Backbone.Model.extend(/** @lends Endpoint.prototype */{
  		defaults: {
  			apiRoot: wpApiSettings.root,
  			versionString: wp.api.versionString,
  			nonce: null,
  			schema: null,
  			models: {},
  			collections: {}
  		},
  
  		/**
  		 * Initialize the Endpoint model.
  		 */
  		initialize: function() {
  			var model = this, deferred;
  
  			Backbone.Model.prototype.initialize.apply( model, arguments );
  
  			deferred = jQuery.Deferred();
  			model.schemaConstructed = deferred.promise();
  
  			model.schemaModel = new wp.api.models.Schema( null, {
  				apiRoot:       model.get( 'apiRoot' ),
  				versionString: model.get( 'versionString' ),
  				nonce:         model.get( 'nonce' )
  			} );
  
  			// When the model loads, resolve the promise.
  			model.schemaModel.once( 'change', function() {
  				model.constructFromSchema();
  				deferred.resolve( model );
  			} );
  
  			if ( model.get( 'schema' ) ) {
  
  				// Use schema supplied as model attribute.
  				model.schemaModel.set( model.schemaModel.parse( model.get( 'schema' ) ) );
  			} else if (
  				! _.isUndefined( sessionStorage ) &&
  				( _.isUndefined( wpApiSettings.cacheSchema ) || wpApiSettings.cacheSchema ) &&
  				sessionStorage.getItem( 'wp-api-schema-model' + model.get( 'apiRoot' ) + model.get( 'versionString' ) )
  			) {
  
  				// Used a cached copy of the schema model if available.
  				model.schemaModel.set( model.schemaModel.parse( JSON.parse( sessionStorage.getItem( 'wp-api-schema-model' + model.get( 'apiRoot' ) + model.get( 'versionString' ) ) ) ) );
  			} else {
  				model.schemaModel.fetch( {
  					/**
  					 * When the server returns the schema model data, store the data in a sessionCache so we don't
  					 * have to retrieve it again for this session. Then, construct the models and collections based
  					 * on the schema model data.
  					 *
  					 * @callback
  					 */
  					success: function( newSchemaModel ) {
  
  						// Store a copy of the schema model in the session cache if available.
  						if ( ! _.isUndefined( sessionStorage ) && ( _.isUndefined( wpApiSettings.cacheSchema ) || wpApiSettings.cacheSchema ) ) {
  							try {
  								sessionStorage.setItem( 'wp-api-schema-model' + model.get( 'apiRoot' ) + model.get( 'versionString' ), JSON.stringify( newSchemaModel ) );
  							} catch ( error ) {
  
  								// Fail silently, fixes errors in safari private mode.
  							}
  						}
  					},
  
  					// Log the error condition.
  					error: function( err ) {
  						window.console.log( err );
  					}
  				} );
  			}
  		},
  
  		constructFromSchema: function() {
  			var routeModel = this, modelRoutes, collectionRoutes, schemaRoot, loadingObjects,
  
  			/**
  			 * Set up the model and collection name mapping options. As the schema is built, the
  			 * model and collection names will be adjusted if they are found in the mapping object.
  			 *
  			 * Localizing a variable wpApiSettings.mapping will over-ride the default mapping options.
  			 *
  			 */
  			mapping = wpApiSettings.mapping || {
  				models: {
  					'Categories':      'Category',
  					'Comments':        'Comment',
  					'Pages':           'Page',
  					'PagesMeta':       'PageMeta',
  					'PagesRevisions':  'PageRevision',
  					'Posts':           'Post',
  					'PostsCategories': 'PostCategory',
  					'PostsRevisions':  'PostRevision',
  					'PostsTags':       'PostTag',
  					'Schema':          'Schema',
  					'Statuses':        'Status',
  					'Tags':            'Tag',
  					'Taxonomies':      'Taxonomy',
  					'Types':           'Type',
  					'Users':           'User'
  				},
  				collections: {
  					'PagesMeta':       'PageMeta',
  					'PagesRevisions':  'PageRevisions',
  					'PostsCategories': 'PostCategories',
  					'PostsMeta':       'PostMeta',
  					'PostsRevisions':  'PostRevisions',
  					'PostsTags':       'PostTags'
  				}
  			},
  
  			modelEndpoints = routeModel.get( 'modelEndpoints' ),
  			modelRegex     = new RegExp( '(?:.*[+)]|\/(' + modelEndpoints.join( '|' ) + '))$' );
  
  			/**
  			 * Iterate thru the routes, picking up models and collections to build. Builds two arrays,
  			 * one for models and one for collections.
  			 */
  			modelRoutes      = [];
  			collectionRoutes = [];
  			schemaRoot       = routeModel.get( 'apiRoot' ).replace( wp.api.utils.getRootUrl(), '' );
  			loadingObjects   = {};
  
  			/**
  			 * Tracking objects for models and collections.
  			 */
  			loadingObjects.models      = {};
  			loadingObjects.collections = {};
  
  			_.each( routeModel.schemaModel.get( 'routes' ), function( route, index ) {
  
  				// Skip the schema root if included in the schema.
  				if ( index !== routeModel.get( ' versionString' ) &&
  						index !== schemaRoot &&
  						index !== ( '/' + routeModel.get( 'versionString' ).slice( 0, -1 ) )
  				) {
  
  					// Single items end with a regex, or a special case word.
  					if ( modelRegex.test( index ) ) {
  						modelRoutes.push( { index: index, route: route } );
  					} else {
  
  						// Collections end in a name.
  						collectionRoutes.push( { index: index, route: route } );
  					}
  				}
  			} );
  
  			/**
  			 * Construct the models.
  			 *
  			 * Base the class name on the route endpoint.
  			 */
  			_.each( modelRoutes, function( modelRoute ) {
  
  				// Extract the name and any parent from the route.
  				var modelClassName,
  					routeName  = wp.api.utils.extractRoutePart( modelRoute.index, 2, routeModel.get( 'versionString' ), true ),
  					parentName = wp.api.utils.extractRoutePart( modelRoute.index, 1, routeModel.get( 'versionString' ), false ),
  					routeEnd   = wp.api.utils.extractRoutePart( modelRoute.index, 1, routeModel.get( 'versionString' ), true );
  
  				// Clear the parent part of the rouite if its actually the version string.
  				if ( parentName === routeModel.get( 'versionString' ) ) {
  					parentName = '';
  				}
  
  				// Handle the special case of the 'me' route.
  				if ( 'me' === routeEnd ) {
  					routeName = 'me';
  				}
  
  				// If the model has a parent in its route, add that to its class name.
  				if ( '' !== parentName && parentName !== routeName ) {
  					modelClassName = wp.api.utils.capitalizeAndCamelCaseDashes( parentName ) + wp.api.utils.capitalizeAndCamelCaseDashes( routeName );
  					modelClassName = mapping.models[ modelClassName ] || modelClassName;
  					loadingObjects.models[ modelClassName ] = wp.api.WPApiBaseModel.extend( {
  
  						// Return a constructed url based on the parent and id.
  						url: function() {
  							var url =
  								routeModel.get( 'apiRoot' ) +
  								routeModel.get( 'versionString' ) +
  								parentName +  '/' +
  									( ( _.isUndefined( this.get( 'parent' ) ) || 0 === this.get( 'parent' ) ) ?
  										( _.isUndefined( this.get( 'parent_post' ) ) ? '' : this.get( 'parent_post' ) + '/' ) :
  										this.get( 'parent' ) + '/' ) +
  								routeName;
  
  							if ( ! _.isUndefined( this.get( 'id' ) ) ) {
  								url +=  '/' + this.get( 'id' );
  							}
  							return url;
  						},
  
  						// Track nonces on the Endpoint 'routeModel'.
  						nonce: function() {
  							return routeModel.get( 'nonce' );
  						},
  
  						endpointModel: routeModel,
  
  						// Include a reference to the original route object.
  						route: modelRoute,
  
  						// Include a reference to the original class name.
  						name: modelClassName,
  
  						// Include the array of route methods for easy reference.
  						methods: modelRoute.route.methods,
  
  						// Include the array of route endpoints for easy reference.
  						endpoints: modelRoute.route.endpoints
  					} );
  				} else {
  
  					// This is a model without a parent in its route
  					modelClassName = wp.api.utils.capitalizeAndCamelCaseDashes( routeName );
  					modelClassName = mapping.models[ modelClassName ] || modelClassName;
  					loadingObjects.models[ modelClassName ] = wp.api.WPApiBaseModel.extend( {
  
  						// Function that returns a constructed url based on the id.
  						url: function() {
  							var url = routeModel.get( 'apiRoot' ) +
  								routeModel.get( 'versionString' ) +
  								( ( 'me' === routeName ) ? 'users/me' : routeName );
  
  							if ( ! _.isUndefined( this.get( 'id' ) ) ) {
  								url +=  '/' + this.get( 'id' );
  							}
  							return url;
  						},
  
  						// Track nonces at the Endpoint level.
  						nonce: function() {
  							return routeModel.get( 'nonce' );
  						},
  
  						endpointModel: routeModel,
  
  						// Include a reference to the original route object.
  						route: modelRoute,
  
  						// Include a reference to the original class name.
  						name: modelClassName,
  
  						// Include the array of route methods for easy reference.
  						methods: modelRoute.route.methods,
  
  						// Include the array of route endpoints for easy reference.
  						endpoints: modelRoute.route.endpoints
  					} );
  				}
  
  				// Add defaults to the new model, pulled form the endpoint.
  				wp.api.utils.decorateFromRoute(
  					modelRoute.route.endpoints,
  					loadingObjects.models[ modelClassName ],
  					routeModel.get( 'versionString' )
  				);
  
  			} );
  
  			/**
  			 * Construct the collections.
  			 *
  			 * Base the class name on the route endpoint.
  			 */
  			_.each( collectionRoutes, function( collectionRoute ) {
  
  				// Extract the name and any parent from the route.
  				var collectionClassName, modelClassName,
  						routeName  = collectionRoute.index.slice( collectionRoute.index.lastIndexOf( '/' ) + 1 ),
  						parentName = wp.api.utils.extractRoutePart( collectionRoute.index, 1, routeModel.get( 'versionString' ), false );
  
  				// If the collection has a parent in its route, add that to its class name.
  				if ( '' !== parentName && parentName !== routeName && routeModel.get( 'versionString' ) !== parentName ) {
  
  					collectionClassName = wp.api.utils.capitalizeAndCamelCaseDashes( parentName ) + wp.api.utils.capitalizeAndCamelCaseDashes( routeName );
  					modelClassName      = mapping.models[ collectionClassName ] || collectionClassName;
  					collectionClassName = mapping.collections[ collectionClassName ] || collectionClassName;
  					loadingObjects.collections[ collectionClassName ] = wp.api.WPApiBaseCollection.extend( {
  
  						// Function that returns a constructed url passed on the parent.
  						url: function() {
  							return routeModel.get( 'apiRoot' ) + routeModel.get( 'versionString' ) +
  									parentName + '/' + this.parent + '/' +
  									routeName;
  						},
  
  						// Specify the model that this collection contains.
  						model: function( attrs, options ) {
  							return new loadingObjects.models[ modelClassName ]( attrs, options );
  						},
  
  						// Track nonces at the Endpoint level.
  						nonce: function() {
  							return routeModel.get( 'nonce' );
  						},
  
  						endpointModel: routeModel,
  
  						// Include a reference to the original class name.
  						name: collectionClassName,
  
  						// Include a reference to the original route object.
  						route: collectionRoute,
  
  						// Include the array of route methods for easy reference.
  						methods: collectionRoute.route.methods
  					} );
  				} else {
  
  					// This is a collection without a parent in its route.
  					collectionClassName = wp.api.utils.capitalizeAndCamelCaseDashes( routeName );
  					modelClassName      = mapping.models[ collectionClassName ] || collectionClassName;
  					collectionClassName = mapping.collections[ collectionClassName ] || collectionClassName;
  					loadingObjects.collections[ collectionClassName ] = wp.api.WPApiBaseCollection.extend( {
  
  						// For the url of a root level collection, use a string.
  						url: function() {
  							return routeModel.get( 'apiRoot' ) + routeModel.get( 'versionString' ) + routeName;
  						},
  
  						// Specify the model that this collection contains.
  						model: function( attrs, options ) {
  							return new loadingObjects.models[ modelClassName ]( attrs, options );
  						},
  
  						// Track nonces at the Endpoint level.
  						nonce: function() {
  							return routeModel.get( 'nonce' );
  						},
  
  						endpointModel: routeModel,
  
  						// Include a reference to the original class name.
  						name: collectionClassName,
  
  						// Include a reference to the original route object.
  						route: collectionRoute,
  
  						// Include the array of route methods for easy reference.
  						methods: collectionRoute.route.methods
  					} );
  				}
  
  				// Add defaults to the new model, pulled form the endpoint.
  				wp.api.utils.decorateFromRoute( collectionRoute.route.endpoints, loadingObjects.collections[ collectionClassName ] );
  			} );
  
  			// Add mixins and helpers for each of the models.
  			_.each( loadingObjects.models, function( model, index ) {
  				loadingObjects.models[ index ] = wp.api.utils.addMixinsAndHelpers( model, index, loadingObjects );
  			} );
  
  			// Set the routeModel models and collections.
  			routeModel.set( 'models', loadingObjects.models );
  			routeModel.set( 'collections', loadingObjects.collections );
  
  		}
  
  	} );
  
  	wp.api.endpoints = new Backbone.Collection();
  
  	/**
  	 * Initialize the wp-api, optionally passing the API root.
  	 *
  	 * @param {object} [args]
  	 * @param {string} [args.nonce] The nonce. Optional, defaults to wpApiSettings.nonce.
  	 * @param {string} [args.apiRoot] The api root. Optional, defaults to wpApiSettings.root.
  	 * @param {string} [args.versionString] The version string. Optional, defaults to wpApiSettings.root.
  	 * @param {object} [args.schema] The schema. Optional, will be fetched from API if not provided.
  	 */
  	wp.api.init = function( args ) {
  		var endpoint, attributes = {}, deferred, promise;
  
  		args                      = args || {};
  		attributes.nonce          = _.isString( args.nonce ) ? args.nonce : ( wpApiSettings.nonce || '' );
  		attributes.apiRoot        = args.apiRoot || wpApiSettings.root || '/wp-json';
  		attributes.versionString  = args.versionString || wpApiSettings.versionString || 'wp/v2/';
  		attributes.schema         = args.schema || null;
  		attributes.modelEndpoints = args.modelEndpoints || [ 'me', 'settings' ];
  		if ( ! attributes.schema && attributes.apiRoot === wpApiSettings.root && attributes.versionString === wpApiSettings.versionString ) {
  			attributes.schema = wpApiSettings.schema;
  		}
  
  		if ( ! initializedDeferreds[ attributes.apiRoot + attributes.versionString ] ) {
  
  			// Look for an existing copy of this endpoint
  			endpoint = wp.api.endpoints.findWhere( { 'apiRoot': attributes.apiRoot, 'versionString': attributes.versionString } );
  			if ( ! endpoint ) {
  				endpoint = new Endpoint( attributes );
  			}
  			deferred = jQuery.Deferred();
  			promise = deferred.promise();
  
  			endpoint.schemaConstructed.done( function( resolvedEndpoint ) {
  				wp.api.endpoints.add( resolvedEndpoint );
  
  				// Map the default endpoints, extending any already present items (including Schema model).
  				wp.api.models      = _.extend( wp.api.models, resolvedEndpoint.get( 'models' ) );
  				wp.api.collections = _.extend( wp.api.collections, resolvedEndpoint.get( 'collections' ) );
  				deferred.resolve( resolvedEndpoint );
  			} );
  			initializedDeferreds[ attributes.apiRoot + attributes.versionString ] = promise;
  		}
  		return initializedDeferreds[ attributes.apiRoot + attributes.versionString ];
  	};
  
  	/**
  	 * Construct the default endpoints and add to an endpoints collection.
  	 */
  
  	// The wp.api.init function returns a promise that will resolve with the endpoint once it is ready.
  	wp.api.loadPromise = wp.api.init();
  
  } )();
  