nl_tokens: callback is just : function ( err ) if err action should be abandoned & error is propogated no data is allowed to be changed by the function
pl_tokens: function verifyIntent ( subject , op , target , <mask> , cb ) { var type = ( _ . isString ( target ) ) ? target : target . type ; var listeners = listenersFor ( op , type ) ; if ( listeners . length === 0 ) { return cb ( ) ; } if ( data && data . uuid ) { delete ( data . uuid ) ; } // uuid is immutable, so don't include - even if it's in the data var intent = new Intent ( subject , op , target , data ) ; async . each ( listeners , function ( listener , callback ) { try { listener ( intent , callback ) ; } catch ( err ) { cb ( err ) ; } } , function ( err ) { cb ( err , target ) ; } ) ; }