@classmethod
def get_api_urls(cls):
    """
        Returns any API urls that any installed flavorpacks have registered with
        the serialbox default */api/pools/* call.
        """
    ret = []
    for fp in cls.get_flavorpacks():
        try:
            urls = fp.api_urls
            if urls.__len__() > 0:
                ret += urls
        except TypeError:
            raise
    return ret
