How to use the azure-mgmt-servermanager.azure.mgmt.servermanager.models.SessionParameters function in azure-mgmt-servermanager

def _create_initial(
            self, resource_group_name, node_name, session, user_name=None, password=None, retention_period=None, credential_data_format=None, encryption_certificate_thumbprint=None, custom_headers=None, raw=False, **operation_config):
        session_parameters = models.SessionParameters(user_name=user_name, password=password, retention_period=retention_period, credential_data_format=credential_data_format, encryption_certificate_thumbprint=encryption_certificate_thumbprint)

        # Construct URL
        url = self.create.metadata['url']
        path_format_arguments = {
            'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str'),
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', min_length=3, pattern=r'[a-zA-Z0-9]+'),
            'nodeName': self._serialize.url("node_name", node_name, 'str', max_length=256, min_length=1, pattern=r'^[a-zA-Z0-9][a-zA-Z0-9_.-]*$'),
            'session': self._serialize.url("session", session, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}
        query_parameters['api-version'] = self._serialize.query("self.api_version", self.api_version, 'str')

        # Construct headers