code: def get_service_task(
          service_name,
          task_name,
          inactive=False,
          completed=False
  ):
      
  
      service = get_service_tasks(service_name, inactive, completed)
  
      if service is not None:
          for task in service:
              if task['name'] == task_name:
                  return task
  
      return None
docs: Get a dictionary describing a service task, or None
          :param service_name: the service name
          :type service_name: str
          :param task_name: the task name
          :type task_name: str
          :param inactive: whether to include inactive services
          :type inactive: bool
          :param completed: whether to include completed services
          :type completed: bool
  
          :return: a dictionary describing the service
          :rtye: dict, or None