code: def from_content(cls, content):
          
          parsed_content = parse_tibiacom_content(content)
          tables = cls._parse_tables(parsed_content)
          try:
              error = tables.get("Error")
              if error and error[0].text == "World with this name doesn't exist!":
                  return None
              selected_world = parsed_content.find('option', selected=True)
              world = cls(selected_world.text)
              world._parse_world_info(tables.get("World Information", []))
  
              online_table = tables.get("Players Online", [])
              world.online_players = []
              for row in online_table[1:]:
                  cols_raw = row.find_all('td')
                  name, level, vocation = (c.text.replace('\xa0', ' ').strip() for c in cols_raw)
                  world.online_players.append(OnlineCharacter(name, world.name, int(level), vocation))
          except AttributeError:
              raise InvalidContent("content is not from the world section in Tibia.com")
  
          return world
docs: Parses a Tibia.com response into a :class:`World`.
  
          Parameters
          ----------
          content: :class:`str`
              The raw HTML from the server's information page.
  
          Returns
          -------
          :class:`World`
              The World described in the page, or ``None``.
  
          Raises
          ------
          InvalidContent
              If the provided content is not the html content of the world section in Tibia.com