public static async Task xDbDeleteAsync <T>(this IIdentityContext_EntityFrameworkCore context, T data, CancellationToken cancellationToken = default) where T : class => await context.SavedDeleteAsync(data, cancellationToken);
 public static IQueryable <T> xDbGetQueryable <T>(this IIdentityContext_EntityFrameworkCore context) where T : class => context.GetQueryable <T>();