private void LogIn(string userId)
 {
     client.Clear();
     // set Response
     client.AddResponse(200, "{" +
                        "\"id\" : \"" + userId + "\"," +
                        "\"access_token\" : \"cdef\"," +
                        "\"expires_in\" : 9223372036854775}");
     KiiUser.LogIn(userId, "pass1234");
     client.Clear();
 }