def register_func(operator, func) -> bool:

True: succeeded
False: failed

Registers the callback function of TaskD Agent. This API is called in user code.

**Table 1** Input parameters
Parameter	Type	Description
operator	String	Key value of the callback function, for example, START_ALL_WORKER.
func	callable	Callback function

**Table 2** Return value description
Type	Description
Bool	Whether registration is successful. True: succeeded False: failed

Parent topic: TaskD Agent APIs