'Initialize the WorkflowStatisticsInstance
:returns: twilio.rest.taskrouter.v1.workspace.workflow.workflow_statistics.WorkflowStatisticsInstance
:rtype: twilio.rest.taskrouter.v1.workspace.workflow.workflow_statistics.WorkflowStatisticsInstance'

def __init__(self, version, payload, workspace_sid, workflow_sid):

    super(WorkflowStatisticsInstance, self).__init__(version)
    self._properties = {'account_sid': payload['account_sid'], 'cumulative': payload['cumulative'], 'realtime': payload['realtime'], 'workflow_sid': payload['workflow_sid'], 'workspace_sid': payload['workspace_sid'], 'url': payload['url']}
    self._context = None
    self._solution = {'workspace_sid': workspace_sid, 'workflow_sid': workflow_sid}
