def _get_nodes_supported_instances(cpu_arch=None):
 if (not cpu_arch):
  return []
 return [(cpu_arch, obj_fields.HVType.BAREMETAL, obj_fields.VMMode.HVM)]

def _get_nodes_supported_instances ( cpu_arch = None ) : if ( not cpu_arch ) : return [ ] return [ ( cpu_arch , obj_fields . HVType . BAREMETAL , obj_fields . VMMode . HVM ) ]
return supported instances for a node .