public Response deleteMemberGroup(String roomName, String groupName) {
        return restClient.delete("chatrooms/" + roomName + "/members/group/" + groupName,
                new HashMap<String, String>());
    }
public Response deleteMemberGroup ( String roomName , String groupName ) { return restClient . delete ( "chatrooms/" + roomName + "/members/group/" + groupName , new HashMap < String , String > ( ) ) ; }
Delete member group from chatroom.

@param roomName
the room name
@param groupName
the groupName
@return the response