code: def _get_url(self, resource, item, sys_id=None):
          
  
          url_str = '%(base_url)s/%(base_path)s/%(resource)s/%(item)s' % (
              {
                  'base_url': self.base_url,
                  'base_path': self.base_path,
                  'resource': resource,
                  'item': item
              }
          )
  
          if sys_id:
              return "%s/%s" % (url_str, sys_id)
  
          return url_str
docs: Takes table and sys_id (if present), and returns a URL
  
          :param resource: API resource
          :param item: API resource item
          :param sys_id: Record sys_id
          :return:
              - url string