Prepares or unprepares game syncs asynchronously.
The group and game syncs are specified by string (refer to 一般信息 for a discussion on using strings and IDs). The game syncs definitions must already exist in the sound engine by having explicitly loaded the bank(s) that contain them (with LoadBank()). A request is posted to the Bank Manager consumer thread. It will resolve all dependencies needed to successfully set this game sync group to one of the game sync values specified, and load the required banks, if applicable. The function returns immediately. Use a callback to be notified when the request has finished being processed.
AK_Success if scheduling is was successful, AK_Fail otherwise.