* Microsoft Learn - https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/access-modifiers[Access modifiers]
* Microsoft Learn - https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/static-classes-and-static-class-members[`static` class members]
* Microsoft Learn - https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/readonly[`readonly` keyword]