code: protected function addInTagTokens()
      {
          $this->mapHandler('tag', 'acceptStartToken');
          $this->addSpecialPattern('\s+', 'tag', 'ignore');
          $this->addAttributeTokens();
          $this->addExitPattern('/>', 'tag');
          $this->addExitPattern('>', 'tag');
      }
docs: Pattern matches to parse the inside of a tag including the attributes and their quoting.