nl_tokens: Find the Store s collection for a certain type of model .
pl_tokens: function ( type , create ) { if ( type instanceof Backbone . RelationalModel ) { <mask> = type . constructor ; } var rootModel = type ; while ( rootModel . _superModel ) { rootModel = rootModel . _superModel ; } var coll = _ . find ( this . _collections , function ( item ) { return item . model === rootModel ; } ) ; if ( ! coll && create !== false ) { coll = this . _createCollection ( rootModel ) ; } return coll ; }