js/libs/ember-data.js
function(callback, binding) {
    get(this, 'relationshipsByName').forEach(function(name, relationship) {
      callback.call(binding, name, relationship);
    });
  }
function(callback, binding) {
    get(this, 'relationshipsByName').forEach(function(name, relationship) {
      callback.call(binding, name, relationship);
    });
  }
function ( callback , binding ) { get ( this , 'relationshipsByName' ) . forEach ( function ( name , relationship ) { callback . call ( binding , name , relationship ) ; } ) ; }
Given a callback, iterates over each of the relationships in the model,
invoking the callback with the name of each relationship and its relationship
descriptor.

@method eachRelationship
@static
@param {Function} callback the callback to invoke
@param {any} binding the value to which the callback's `this` should be bound
Given a callback iterates over each of the relationships in the model invoking the callback with the name of each relationship and its relationship descriptor .