nl_tokens: Check whether the validity of the entire form has changed since it was last checked and if so fire the {
pl_tokens: function ( ) { var me = this , valid = ! me . hasInvalidField ( ) ; if ( valid !== me . wasValid ) { me . onValidityChange ( valid ) ; <mask> . fireEvent ( 'validitychange' , me , valid ) ; me . wasValid = valid ; } }