public static PrintingConfig <TOwner> TakeOnly <TOwner>(this PropertySerializingConfig <TOwner, string> config,
                                                         int numberChar)
 {
     return(config.Using(str =>
     {
         if (str == null)
         {
             return "<null>";
         }
         return str.Length < numberChar ? str : str.Substring(0, numberChar);
     }));
 }
 public static PrintingConfig <TOwner> Using <TOwner>(
     this PropertySerializingConfig <TOwner, double> propertySerializingConfig, CultureInfo cultureInfo)
 {
     return(propertySerializingConfig.Using(d => d.ToString(cultureInfo)));
 }