'Returns a page of :class:`UsageRecord` resources as a list. For paging
information see :class:`ListResource`
:param category: Only include usage of this usage category.
:param start_date: Only include usage that has occurred on or after
this date. Format is YYYY-MM-DD. All dates are in
GMT.
:param end_date: Only include usage that has occurred on or before this
date. Format is YYYY-MM-DD. All dates are in GMT.'

def list(self, **kwargs):

    return self.get_instances(kwargs)
