public static DbContextOptions <T> CreateOptions <T>(DbContext dbContext) where T : DbContext
{
var serviceProvider = (IInfrastructure <IServiceProvider>)dbContext;
#pragma warning disable EF1001
DbContextOptions options = (DbContextOptions)serviceProvider.GetService <IDbContextServices>().ContextOptions;
#pragma warning restore EF1001
return((DbContextOptions <T>)options.CreateOptions(typeof(T)));
}