private ValidateXmlHandler getHandler(final @NotNull PsiFile file) {
    for (ValidateXmlHandler handler : ValidateXmlHandler.EP_NAME.getExtensionList()) {
      if (handler.isAvailable((XmlFile)file)) {
        return handler;
      }
    }
    ValidateXmlActionHandler handler = new ValidateXmlActionHandler(true);
    handler.setErrorReporter(new StdErrorReporter(handler, file, () -> doRunAction(file)));
    return handler;
  }
private ValidateXmlHandler getHandler(final @NotNull PsiFile file)