public static async Task <Result> CheckExistence <TEntity>(
this IReadonlyRepository <TEntity> repository, int id) where TEntity : BaseEntity
{
var isEntityExists = await repository.AnyAsync(entity => entity.Id == id);
if (!isEntityExists)
{
return(Result.Fail($"Entity {typeof(TEntity)} with id {id} wasn't found"));
}
return(Result.Ok());
}