docs: def run_tag_processor(self, tag_proc_name):
          '''Run a tag processor.
  
          Args:
              tag_proc_name: A string key that maps to the TagProcessor to run.
          '''
          tag_processor = self.tag_procs[tag_proc_name]
  
          for tag in tag_processor.find(self.soup):
              self.process_tag(tag_proc_name, tag)