code: @Override
      Object executeCommand(int timeout, String componentName, Object... data) throws QTasteException {
          try {
              prepareWriter(data[0].toString());
              for (Window window : getDisplayableWindows()) {
                  analyzeComponent(window, 1);
              }
              mWriter.write("</root>");
              mWriter.flush();
              mWriter.close();
          } catch (IOException e) {
              throw new QTasteTestFailException("Error saving to file" + data[0].toString() + ":", e);
          }
  
          return null;
      }
docs: Analyze the structure of a java application and save it in the specified filename in the current working directory.
  
  @return null