public async Task <HttpResponseMessage> ChildrenCount(Guid id)
{
var result = new {
ChildrenCount = (await MyCoreApi.FindAllChildrenIdsByParentIdAsync(id)).Count()
};
return(new HttpResponseMessage {
Content = new StringContent(SerializeObjectToString(result), System.Text.Encoding.GetEncoding("UTF-8"), "application/json")
});
}