code: @Override
      public void execute() {
          StringBuilder yankBuilder = new StringBuilder();
          for (int l = 0; l < lines; l++) {
              try {
                  yankBuilder.append(editor.getContent(editor.getLine() + l)).append("\n");
              } catch (Exception ex) {
                  //noop
              }
              ClipboardUtils.setContnent(yankBuilder.toString());
          }
      }
docs: Executes the command.