public static String getMethodParameter(PsiElement parameter) {

    if (!(parameter instanceof StringLiteralExpression)) {
      return null;
    }

    StringLiteralExpression stringLiteralExpression = (StringLiteralExpression) parameter;

    String stringValue = stringLiteralExpression.getText();
    String value =
        stringValue.substring(
            stringLiteralExpression.getValueRange().getStartOffset(),
            stringLiteralExpression.getValueRange().getEndOffset());

    return removeIdeaRuleHack(value);
  }