OnMatchMakingRoomLeave
public MatchMakingLeaveUserInRoomEventHandler OnMatchMakingRoomLeave;
Argument
| Value | Type | Description | 
|---|---|---|
| args | MatchMakingGamerInfoInRoomEventArgs | Information on users who left the waiting room | 
MatchMakingGamerInfoInRoomEventArgs
| Value | Type | Description | 
|---|---|---|
| ErrInfo | ErrorCode | Error information | 
| Reason | string | Error description | 
| UserInfo | MatchMakingUserInfo | Information on users who left the waiting room | 
Description
This event is called when a user leaves the waiting room.
- It is called when the user leaves the room.
 - It is also called when other users leave the room.
 - It is also called when a user is kicked out of the waiting room.
 - When the host leaves the waiting room and the room expires as a result, the following event is called: 
- Exit event of the host is called.
 - The user's own exit event is not called.
 
 
In order for an event to be called, the message sending/receiving method must be called.
Example
Backend.Match.OnMatchMakingRoomLeave = (MatchMakingGamerInfoInRoomEventArgs args) => {
    // TODO
};
Argument cases
When I leave or another user leaves 
ErrInfo : ErrorCode.Success
UserInfo : information on the user who left
When a user tries to leave the waiting room while matching is in progress(exit fails)
ErrInfo : ErrorCode.InvalidOperation
Reason : In-progress matchmaking.  
When I am kicked out or another user is kicked out
ErrInfo : ErrorCode.Match_Making_KickedByOwner
UserInfo : information on the user who was kicked out