nl_tokens: Returns true if the collection contains the passed Object as an item .
pl_tokens: function ( o ) { var me = this , key ; if ( o != null ) { // If //     We have not been forced into using linear lookup by a usage of the 2 arg form of add // and //     The key extraction function yields a key // Then use the map to determine object presence. if ( ! me . useLinearSearch && ( <mask> = me . getKey ( o ) ) ) { return this . map [ key ] != null ; } // Fallback: Use linear search return Ext . Array . indexOf ( this . items , o ) !== - 1 ; } return false ; }