docs: def get(self, instance_name):
          """Get an ObjectRocket instance by name.
  
          :param str instance_name: The name of the instance to retrieve.
          :returns: A subclass of :py:class:`bases.BaseInstance`, or None if instance does not exist.
          :rtype: :py:class:`bases.BaseInstance`
          """
          url = self._url + instance_name + '/'
          response = requests.get(url, **self._default_request_kwargs)
          data = self._get_response_data(response)
          return self._concrete_instance(data)