docs: public void parse() {
          if (!lexerEngine.skipIfEqual(DefaultKeyword.FOR)) {
              return;
          }
          lexerEngine.skipIfEqual(DefaultKeyword.UPDATE, PostgreSQLKeyword.SHARE);
          lexerEngine.unsupportedIfEqual(DefaultKeyword.OF);
          lexerEngine.skipIfEqual(PostgreSQLKeyword.NOWAIT);
      }