text: /**
   * Customer model
   * @param {Object} customer - a customer
   */
  function Customer(customer) {
  	ko.mapping.fromJS(customer, {
  		'services': {
  			create: function (options) {
  				return new Service(options.data);
  			}
  		}
  	}, this);
  	this.edit = ko.observable(false);
  
  }