How to use the azure-servicemanagement-legacy.azure.servicemanagement._common_models._list_of function in azure-servicemanagement-legacy

def __init__(self):
        self.public_keys = _list_of(PublicKey)

def __init__(self):
        self.resource_extensions = _list_of(ResourceExtension)

def __init__(self):
        self.data_disk_configurations = _list_of(DataDiskConfiguration)

def __init__(self):
        self.affinity_groups = _list_of(AffinityGroup)

def __init__(self):
        self.components = _list_of(UnattendComponent)

def __init__(self):
        self.replication_progress_elements = _list_of(ReplicationProgressElement)

def __init__(self):
        self.metric_response = _list_of(MetricResponse)

def __init__(self):
        self.metric_sample = _list_of(MetricSample)

def __init__(self):
        self.roles = _list_of(Role)

def __init__(self):
        self.subscriptions = _list_of(Subscription)