code: def get_process_behavior(self, process_id, behavior_ref_name, expand=None):
          
          route_values = {}
          if process_id is not None:
              route_values['processId'] = self._serialize.url('process_id', process_id, 'str')
          if behavior_ref_name is not None:
              route_values['behaviorRefName'] = self._serialize.url('behavior_ref_name', behavior_ref_name, 'str')
          query_parameters = {}
          if expand is not None:
              query_parameters['$expand'] = self._serialize.query('expand', expand, 'str')
          response = self._send(http_method='GET',
                                location_id='d1800200-f184-4e75-a5f2-ad0b04b4373e',
                                version='5.0-preview.2',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('ProcessBehavior', response)
docs: GetProcessBehavior.
          [Preview API] Returns a behavior of the process.
          :param str process_id: The ID of the process
          :param str behavior_ref_name: The reference name of the behavior
          :param str expand:
          :rtype: :class:`<ProcessBehavior> <azure.devops.v5_0.work_item_tracking_process.models.ProcessBehavior>`