The visitor pattern is a software design pattern that allows a single operation to be applied to the elements of an object structure without changing the structure itself. It is a way of separating an algorithm from an object structure on which it operates.
Juka is built using the visitor pattern. This means that Juka code can be written in a way that is independent of the specific object structure that it is being applied to. This makes Juka code more reusable and easier to maintain.
For more information on the visitor pattern, please see the Wikipedia article: