function( relation ) {
			var exists = _.any( this._orphanRelations, function( rel ) {
				return _.all( relation || [], function( val, key ) {
					return val === rel[ key ];
				});
			});

			if ( !exists && relation.model && relation.type ) {
				this._orphanRelations.push( relation );
			}
		}
function( relation ) {
			var exists = _.any( this._orphanRelations, function( rel ) {
				return _.all( relation || [], function( val, key ) {
					return val === rel[ key ];
				});
			});

			if ( !exists && relation.model && relation.type ) {
				this._orphanRelations.push( relation );
			}
		}
function ( relation ) { var exists = _ . any ( this . _orphanRelations , function ( rel ) { return _ . all ( relation || [ ] , function ( val , key ) { return val === rel [ key ] ; } ) ; } ) ; if ( ! exists && relation . model && relation . type ) { this . _orphanRelations . push ( relation ) ; } }
Deposit a `relation` for which the `relatedModel` can't be resolved at the moment.

@param {Object} relation
Deposit a relation for which the relatedModel can t be resolved at the moment .