def get_as_string_with_default(self, key, default_value):
        """
        Converts map element into a string or returns default value if conversion is not possible.

        :param key: an index of element to get.

        :param default_value: the default value

        :return: string value ot the element or default value if conversion is not supported.
        """
        value = self.get(key)
        return StringConverter.to_string_with_default(value, default_value)
Converts map element into a string or returns default value if conversion is not possible.

        :param key: an index of element to get.

        :param default_value: the default value

        :return: string value ot the element or default value if conversion is not supported.