@Nullable
  public static String getStringLiteralContent(PsiLiteralExpression expression) {
    String text = expression.getText();
    int textLength = text.length();
    if (textLength > 1 && text.charAt(0) == '\"' && text.charAt(textLength - 1) == '\"') {
      return text.substring(1, textLength - 1);
    }
    if (textLength > QUOT.length() && text.startsWith(QUOT) && text.endsWith(QUOT)) {
      return text.substring(QUOT.length(), textLength - QUOT.length());
    }
    return null;
  }
@Nullable
  public static String getStringLiteralContent(PsiLiteralExpression expression)