'Convert string containing HTML entities to its unicode equivalent.
Convert a string containing HTML entities of the form \'&amp;\' or \'&97;\'
to a normalized unicode string. E.g., \'AT&amp;T\' converted to \'AT&T\'.
Args:
s (str): str containing one or more HTML entities.
Return:
s (str): converted string'

def convert_html_entities(self, s):

    return replace_entities(s)
