nl_tokens: This method is no longer needed But still here for backwards compatibility of helper chaining
pl_tokens: function protoWrap ( proto , name , callback , isAsync ) { proto [ name ] = function ( ) { var args = arguments ; if ( isAsync ) { return callback . apply ( this , args ) ; } else { return this . then ( function ( ) { return callback . <mask> ( this , args ) ; } ) ; } } ; }