From javadoc-dev

Hello,
When I was creating tests for JDK-8259216 (namely this example), I encountered another problem, where instance inner class parameterized types (generics) in javadoc omit outer classes' generic information.

An example:
Tree.java
public class Tree<T> {
    public class Node {
        T data;
        Node left;
        Node right;
        // etc..
    }
    Node root;
    // etc..
}

User.java
public class User {
    public void take(Tree<Integer>.Node now, Tree<String>.Node other) {}
    public void take(Tree<Integer> now, Tree<String> other) {}
}

Observe the javadoc method summaries (same for details) are
void take(Tree.Node now, Tree.Node other)
void take(Tree<java.lang.Integer> now, Tree<java.lang.String> other)
while it's the most reasonable from the test code above that both should include the generic information.