extensions/treemap_reporter/treemap_recorder.php
public function paintFail($message)
    {
        parent::paintFail($message);
        $node    = new TreemapNode('Assertion', $message, false);
        $current = $this->_stack->peek();
        $current->putChild($node);
        $current->fail();
    }
public function paintFail($message)
    {
        parent::paintFail($message);
        $node    = new TreemapNode('Assertion', $message, false);
        $current = $this->_stack->peek();
        $current->putChild($node);
        $current->fail();
    }
acceptor for failing assertion node