class String:
    """
    Class for utility methods on the Python str type.
    """

    @staticmethod
    def is_empty(some_string: str) -> bool:
        """
        Checks if 'some_string' is an empty string.
        An empty string is either a sequence with zero characters or one that consists only of space characters.
        Args:
            some_string: the string to be checked.

        Returns:
            bool: True if 'some_string' is empty, False otherwise.

        """
        return not some_string or some_string.strip() == ""