public function containsField($field)
    {
        $identifier = $field instanceof FieldInterface ? $field->getFieldElementName() : $field;
        foreach ($this->getList() as $error) {
            $field = $error->getField();
            if (is_object($field) && $field->getFieldElementName() == $identifier) {
                return true;
            }
        }

        return false;
    }