@Override
    String wrap(ChainVariable outVar, String code, StreamToLoopReplacementContext context) {
      String dropping = context.declare("dropping", "boolean", "true");
      return "if(" + dropping + ") {\n" +
             "if(" + myFn.getText() + ") {\ncontinue;\n}\n" +
             dropping + "=false;\n" +
             "}\n" + code;
    }
@Override
    String wrap(ChainVariable outVar, String code, StreamToLoopReplacementContext context)