Y_Y

productrest.cs

IProductGet : IGet<List<Product>>
IProductPost : IPost<Product, Product>
IProductDelete : IDelete<Product, long>

class ProductRest :
    IProductGet,
    IProductPost,
    IProductDelete
{
    public async Task<List<Product>> Get(CancellationToken cancellationToken)
    {
        var response = await httpClient.Get<List<Product>>(path, cancellationToken);
        return new List<Product>(response);
    }

    public async Task<Product> Post(Product product, CancellationToken cancellationToken)
    {
        var response = await httpClient.Post<Product>(path, product, cancellationToken);
        return response;
    }

    public async Task<Product> Delete(long id, CancellationToken cancellationToken)
    {
        var response = await httpClient.Delete<Product>(path, new { id }, cancellationToken);
        return response;
    }
}
// issues: path generation, input generation, tedious