@Nullable
  protected VirtualFile findOutput() {
    if (!StringUtil.isEmptyOrSpaces(myConfiguration.getOutputFile())) {
      VirtualFile virtualFile = LocalFileSystem.getInstance().refreshAndFindFileByPath(
        myConfiguration.getOutputFile());
      if (virtualFile == null) {
        virtualFile = LocalFileSystem.getInstance().refreshAndFindFileByPath(
          myConfiguration.getWorkingDirectory() + myConfiguration.getOutputFile());
      }
      return virtualFile;
    }
    return null;
  }
@Nullable
  protected VirtualFile findOutput()