'Fetch a WorkflowStatisticsInstance
:param unicode minutes: The minutes
:param datetime start_date: The start_date
:param datetime end_date: The end_date
:returns: Fetched WorkflowStatisticsInstance
:rtype: twilio.rest.taskrouter.v1.workspace.workflow.workflow_statistics.WorkflowStatisticsInstance'

def fetch(self, minutes=values.unset, start_date=values.unset, end_date=values.unset):

    return self._proxy.fetch(minutes=minutes, start_date=start_date, end_date=end_date)
