Get the count of a word or phrase `s` within this WordList.
    :param strg: The string to count.
    :param case_sensitive: A boolean, whether or not the search is case-sensitive.

def count(self, strg, case_sensitive=False, *args, **kwargs):
    """Get the count of a word or phrase `s` within this WordList.
    :param strg: The string to count.
    :param case_sensitive: A boolean, whether or not the search is case-sensitive.
    """
    if not case_sensitive:
        return [word.lower() for word in self].count(strg.lower(), *args,
                **kwargs)
    return self._collection.count(strg, *args, **kwargs)