nl_tokens: Let the user set any of the parameters with a plain object .
pl_tokens: function setQueryParameters ( params ) { if ( ! params ) return this ; var error = SearchParameters . validate ( this , params ) ; if ( error ) { throw error ; } var parsedParams = SearchParameters . _parseNumbers ( params ) ; return this . mutateMe ( function mergeWith ( newInstance ) { var ks = keys ( params ) ; forEach ( <mask> , function ( k ) { newInstance [ k ] = parsedParams [ k ] ; } ) ; return newInstance ; } ) ; }