nl_tokens: - shape
pl_tokens: function ( ) { if ( ! this [ inSetupSymbol ] ) { ObservationRecorder . add ( this , '__keys' ) ; } var enumerable = this . constructor . enumerable ; if ( enumerable ) { return Object . <mask> ( this . _data ) . filter ( function ( key ) { return enumerable [ key ] !== false ; } , this ) ; } else { return Object . keys ( this . _data ) ; } }