private void applyItem(@NlsSafe final String contextStr) {
    XmlFile context = null;
    if (!myNoneText.equals(contextStr)) {
      context = myPathToFileMap.get(contextStr);
      assert context != null;
    }
    AntConfigurationBase.getInstance(myProject).setContextFile(myFile, context);
  }
private void applyItem(@NlsSafe final String contextStr)