def is_null_or_empty(string_val):
    """Null or empty string check.

    A utility method to check to see if the specified string is null or empty.

    :param str string_val: The value to check.
    :returns: True if null or empty; Otherwise, False.
    :rtype: bool
    """
    if string_val and string_val.strip():
        return False
    return True