public static boolean isDocStringExpression(@NotNull PyExpression expression) {
    if (getParentDefinitionDocString(expression) == expression) {
      return true;
    }
    if (expression instanceof PyStringLiteralExpression) {
      return isVariableDocString((PyStringLiteralExpression)expression);
    }
    return false;
  }
public static boolean isDocStringExpression(@NotNull PyExpression expression)