nl_tokens: When this . instance is destroyed cleanup our relations . Get reverse relation call removeRelated on each .
pl_tokens: function ( ) { this . stopListening ( ) ; if ( this instanceof Backbone . HasOne ) { this . setRelated ( null ) ; } else if ( this instanceof Backbone . HasMany ) { this . setRelated ( this . _prepareCollection ( ) ) ; } _ . each ( this . getReverseRelations ( ) , function ( relation ) { relation . removeRelated ( this . <mask> ) ; } , this ) ; }