Is There a Way to Like Define Public and Private Functions?

A lot of plugins need some way to tell if a function is like public or private. And so again, it's like if I look at a new Python tool, you know, they want to go off and implement something they might have to implement all that stuff themselves. But for us, we have all that infrastructure in place. And so if we want to build a new fun piece of functionality, it's just sort of defining the rule and we get all this other stuff for free.