nl_tokens: This is used to modify the delegate .
pl_tokens: function extend ( object , properties ) { var entry , result = { } ; for ( entry in object ) { /* istanbul ignore else */ if ( object . hasOwnProperty ( entry ) ) { result [ entry ] = object [ entry ] ; } } for ( entry in properties ) { /* istanbul ignore else */ if ( <mask> . hasOwnProperty ( entry ) ) { result [ entry ] = properties [ entry ] ; } } return result ; }