code: def virtual_storage_resources(self):
          
          # We do here some lazy loading.
          if not self._virtual_storage_resources:
              self._virtual_storage_resources = \
                  VirtualStorageResourceManager(self)
          return self._virtual_storage_resources
docs: :class:`~zhmcclient.VirtualStorageResourceManager`: Access to the
          :term:`virtual storage resources <Virtual Storage Resource>` in this
          storage group.