docs: private void visit(
        HtmlMatcherBlockNode blockNode,
        Map<Equivalence.Wrapper<ExprNode>, Boolean> exprValueMap,
        HtmlStack stack) {
      if (blockNode.getGraph().getRootNode().isPresent()) {
        new HtmlTagMatchingPass(
                errorReporter,
                idGenerator,
                false,
                stack.inForeignContent,
                blockNode.getParentBlockType())
            .run(blockNode.getGraph());
      }
      Optional<HtmlMatcherGraphNode> nextNode = blockNode.getNodeForEdgeKind(EdgeKind.TRUE_EDGE);
      if (nextNode.isPresent()) {
        visit(nextNode.get(), exprValueMap, stack);
      } else {
        checkUnusedTags(stack);
      }
    }