code: def get_bundle(self, bundle_id=None):
          # type: (Union[Bundle, int]) -> Bundle
          
          if bundle_id is None:
              # Current bundle
              return self.__bundle
          elif isinstance(bundle_id, Bundle):
              # Got a bundle (compatibility with older install_bundle())
              bundle_id = bundle_id.get_bundle_id()
  
          return self.__framework.get_bundle_by_id(bundle_id)
docs: Retrieves the :class:`~pelix.framework.Bundle` object for the bundle
          matching the given ID (int). If no ID is given (None), the bundle
          associated to this context is returned.
  
          :param bundle_id: A bundle ID (optional)
          :return: The requested :class:`~pelix.framework.Bundle` object
          :raise BundleException: The given ID doesn't exist or is invalid