I am not a Java programmer but the Java class literal seems like a perfect example. The class literal provides a language mechanism for representing a type of c

I am not a Java programmer but the Java class literal seems like a perfect example. The class literal provides a language mechanism for representing a type of class (in Go's case it would be a type of struct) without the need for an actual instance of the class or another arbitrary data type (like a string or const) that the application is programmed to recognize as a signal for that class.