bare Source Type
The source type without generic type arguments and nullability ("?").
For val car:MyClass
value will be "MyClass". For val car:MyClass?
value will be "MyClass". For val car:MyClass<String>
value will be "MyClass" For val car:MyClass<String?>?
value will be "MyClass" For val car:com.app.MyClass
value will be "MyClass"