是桥梁图案还是立面图案?

我有C接口，其中包含A和B接口。

这是实现哪个模式?

public class Service : IService
{
    private readonly IWebServiceProvider _serviceProvider;
    private readonly IDatabaseProvider _dbProvider;
    public Service(IWebServiceProvider serviceProvider, IDatabaseProvider dbInteractionsProvider)
    {
        _serviceProvider = serviceProvider;
        _dbInteractionsProvider = dbInteractionsProvider;
    }
    public IEnumerable<Company> CompanySearch(string name)
    {
        return _dbProvider.CompanySearch(name);
    }
    public ValidationResult ValidateUser(Data data)
    {
        var result = _serviceProvider.ValidateUser(new ValidationData()
        {
            Company = data.CompanyName,
            Password = data.Password,
            Login = data.Login
        });
        return new ValidationResult() { ErrorMessage = result.ErrorMessage };
    }
    public bool ResetPassword(ResetPassword resetPassword)
    {
        throw new System.NotImplementedException();
    }
    public string GenerateURL(int id)
    {
        return _serviceProvider.GenerateURL(id);
    }
}