How to use the azure-mgmt-servicefabric.azure.mgmt.servicefabric.models.__dict__ function in azure-mgmt-servicefabric

def __init__(
            self, credentials, subscription_id, base_url=None):

        self.config = ServiceFabricManagementClientConfiguration(credentials, subscription_id, base_url)
        super(ServiceFabricManagementClient, self).__init__(self.config.credentials, self.config)

        client_models = {k: v for k, v in models.__dict__.items() if isinstance(v, type)}
        self.api_version = '2017-07-01-preview'
        self._serialize = Serializer(client_models)
        self._deserialize = Deserializer(client_models)

        self.clusters = ClustersOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.cluster_versions = ClusterVersionsOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.operations = Operations(
            self._client, self.config, self._serialize, self._deserialize)
        self.application_type = ApplicationTypeOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.version = VersionOperations(
            self._client, self.config, self._serialize, self._deserialize)
        self.application = ApplicationOperations(
            self._client, self.config, self._serialize, self._deserialize)