IsGameRoomActivate
public BackendReturnObject IsGameRoomActivate();
Description
This is a function to check whether there is a game in progress for a user.
When there is a game that can be reconnected to, it returns the server address, server port, match type, match mode type, and room token of that game.  
Example
Synchronous
Backend.Match.IsGameRoomActivate();
Asynchronous
Backend.Match.IsGameRoomActivate(callback =>
{
    //todo
});
SendQueue
SendQueue.Enqueue(Backend.Match.IsGameRoomActivate, callback =>
{
    //todo
});
Return cases
Success cases
When there is a game that can be reconnected to
statusCode : 200
ReturnValue : refer to GetReturnValuetoJSON
Error cases
When there is no game that can be reconnected to
statusCode : 404
errorCode : NotFoundError  
GetReturnValuetoJSON
{
    {
        serverPublicHostName  : { "In-game server address" }
        serverPort : { "In-game server port" }
        roomToken : { "Room token" }
        matchType : { "1" }, // You must typecast the string value as byte, and then typecast it as MatchType.  
        matchModeType : { "1" }, // You must typecast the string value as byte, and then typecast it as MatchModeType.  
        enable_sandbox_mode : { true }, // Whether the established matching is in sandbox mode
        match_card_inDate : { "MatchingCard Indate" }  // Matching card inDate of the established matching
    },
    {
        serverPublicHostName: [string],
        serverPort: [string],
        roomToken : [string],
        matchType: [string],
        matchModeType: [string],
        enable_sandbox_mode: [bool],
        match_card_inDate: [string]
    },
}