Overridden by subclasses to add questions to the message. Note: Because of message size limitation the returned message may be different than the message parameter.
Overridden by subclasses to add questions to the message. Note: Because of message size limitation the returned message may be different than the message parameter.
Returns the next advanced state.
In general, this advances one step in the following sequence: PROBING_1, PROBING_2, PROBING_3, ANNOUNCING_1, ANNOUNCING_2, ANNOUNCED.
or CANCELING_1, CANCELING_2, CANCELING_3, CANCELED Does not advance for ANNOUNCED and CANCELED state.