public void UpdateChild()
 {
     var repository = new CustomerRepositoryHelper();
     var childData = new ChildData
                     {
                         Id = 1,
                         LicenseId = "12345",
                         Name = "Sergei1",
                         Avatar = "oak1",
                         Obs = "1",
                         Category = "category1"
                     };
     Console.WriteLine(repository.UpdateChild(childData));
 }