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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_instance(self, payload):
 """ Build an instance of WorkflowInstance :param dict payload: Payload response from the API :returns: twilio.rest.taskrouter.v1.workspace.workflow.WorkflowInstance :rtype: twilio.rest.taskrouter.v1.workspace.workflow.WorkflowInstance """

        return WorkflowInstance(self._version, payload, workspace_sid=self._solution['workspace_sid'], )