func (sm *ShardMux) StopManaging(shardID uint64) {
	sm.lock.Lock()
	defer sm.lock.Unlock()
	delete(sm.managers, shardID)
}
// StopManaging stops managing a certain shard.
StopManaging stops managing a certain shard.
// StopManaging stops managing a certain shard .
func (sm *ShardMux) StopManaging(shardID uint64) {
	sm.lock.Lock()
	defer sm.lock.Unlock()
	delete(sm.managers, shardID)
}
func ( sm * ShardMux ) StopManaging ( shardID uint64 ) { sm . lock . Lock ( ) defer sm . lock . Unlock ( ) delete ( sm . managers , shardID ) }
StopManaging stops managing a certain shard.
StopManaging stops managing a certain shard .