code: def hbas(self):
          
          # We do here some lazy loading.
          if not self._hbas:
              try:
                  dpm_sm = self.feature_enabled('dpm-storage-management')
              except ValueError:
                  dpm_sm = False
              if not dpm_sm:
                  self._hbas = HbaManager(self)
          return self._hbas
docs: :class:`~zhmcclient.HbaManager`: Access to the :term:`HBAs <HBA>` in
          this Partition.
  
          If the "dpm-storage-management" feature is enabled, this property is
          `None`.