nl_tokens: Returns the version of Qooxdoo
pl_tokens: function ( ) { if ( this . __qooxdooVersion ) { return this . __qooxdooVersion ; } if ( ! this . __qooxdooVersion ) { let lib = this . findLibrary ( "qx" ) ; if ( lib ) { this . __qooxdooVersion = lib . getVersion ( ) ; } } <mask> this . __qooxdooVersion ; }