Attributes, custom, Meta

Метапрограммирование

https://learn.microsoft.com/en-us/dotnet/csharp/advanced-topics/reflection-and-attributes/attribute-tutorial

https://learn.microsoft.com/ru-ru/dotnet/csharp/advanced-topics/reflection-and-attributes/attribute-tutorial

https://learn.microsoft.com/ru-ru/dotnet/csharp/advanced-topics/reflection-and-attributes/creating-custom-attributes

https://learn.microsoft.com/ru-ru/dotnet/standard/attributes/writing-custom-attributes