code: def process_into(self, node, obj):
          
          if isinstance(node, BeautifulSoup.NavigableString):
              text = self.process_text(node)
              if text:
                  obj.append(text)
              return
          if node.name == 'p':
              # add a new paragraph into the pyth object
              new_obj = document.Paragraph()
              obj.append(new_obj)
              obj = new_obj
          elif node.name == 'ul':
              # add a new list
              new_obj = document.List()
              obj.append(new_obj)
              obj = new_obj
          elif node.name == 'li':
              # add a new list entry
              new_obj = document.ListEntry()
              obj.append(new_obj)
              obj = new_obj
          for child in node:
              self.process_into(child, obj)
docs: Process a BeautifulSoup node and fill its elements into a pyth
          base object.