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);