code: def get_default_url():
      
      from bugzilla.base import _open_bugzillarc
      cfg = _open_bugzillarc()
      if cfg:
          cfgurl = cfg.defaults().get("url", None)
          if cfgurl is not None:
              log.debug("bugzillarc: found cli url=%s", cfgurl)
              return cfgurl
      return DEFAULT_BZ
docs: Grab a default URL from bugzillarc [DEFAULT] url=X