code: def retrieve_and_parse_profile(fid: str) -> Optional[ActivitypubProfile]:
      
      profile = retrieve_and_parse_document(fid)
      if not profile:
          return
      try:
          profile.validate()
      except ValueError as ex:
          logger.warning("retrieve_and_parse_profile - found profile %s but it didn't validate: %s",
                         profile, ex)
          return
      return profile
docs: Retrieve the remote fid and return a Profile object.