public static IQueryFilter <T, P> Or <T, P>(this IFilterOperator <T> query, Expression <Func <T, P> > property) =>
 query.AddOperator(nameof(IQueryInstructions.Or), property);
 public static IQueryFilter <T> Or <T>(this IFilterOperator <T> query, string property) =>
 query.AddOperator(nameof(IQueryInstructions.Or), property);