'Retrieve the quotas for the given user and project.
:param context: The request context, for access checks.
:param project_id: The ID of the project to return quotas for.
:param user_id: The ID of the user to return quotas for.
:param quota_class: If project_id != context.project_id, the
quota class cannot be determined.  This
parameter allows it to be specified.
:param defaults: If True, the quota class value (or the
default value, if there is no value from the
quota class) will be reported if there is no
specific value for the resource.
:param usages: If True, the current counts will also be returned.'

def get_user_quotas(self, context, project_id, user_id, quota_class=None, defaults=True, usages=True):

    return self._driver.get_user_quotas(context, self._resources, project_id, user_id, quota_class=quota_class, defaults=defaults, usages=usages)
