public async Task Update(T item)
{
var keys = _grid.GetPrimaryKeyValues(item);
string url = GetUrl(_grid, _url, keys);
var response = await _httpClient.PutAsJsonAsync <T>(url, item, _jsonOptions);
if (!response.IsSuccessStatusCode)
{
throw new GridException("ODATA-02", "Error updating the order");
}
}