code: private void traverseClass(Node classNode, Scope scope) {
      checkArgument(classNode.isClass());
      if (NodeUtil.isClassDeclaration(classNode)) {
        traverseClassDeclaration(classNode, scope);
      } else {
        traverseClassExpression(classNode, scope);
      }
    }
docs: Handle a class that is not the RHS child of an assignment or a variable declaration
  initializer.
  
  <p>For
  @param classNode
  @param scope