public void AddProduct(Product product)
 {
     Console.WriteLine("+ Added a product. Let`s add the product type");
     _logicsState.SetState(_logicsState.AddedProductTypeState);
 }
 public void AddProductType(ProductType productType)
 {
     Console.WriteLine("+ You added the type ! After that add parametr of product");
     _logicsState.SetState(_logicsState.AddedProductParametrState);
 }
 public void AddProductParametr(List <ProductParametr> productParametrs)
 {
     Console.WriteLine("+ You added the parametrs of product");
     _logicsState.SetState(_logicsState.AddedProductParametrValueState);
 }