internal static extern void GameServices_FetchServerAuthCode(HandleRef self, string server_client_id, FetchServerAuthCodeCallback callback, IntPtr callback_arg);
 internal static extern void GameServices_FetchServerAuthCode(
     HandleRef self,
     /* from(char const *) */string server_client_id,
     /* from(GameServices_FetchServerAuthCodeCallback_t) */FetchServerAuthCodeCallback callback,
     /* from(void *) */IntPtr callback_arg);
 internal static extern void GameServices_FetchServerAuthCode(
     HandleRef self,
     /* from(char const *) */ string server_client_id,
     /* from(GameServices_FetchServerAuthCodeCallback_t) */ FetchServerAuthCodeCallback callback,
     /* from(void *) */ IntPtr callback_arg);