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

def __init__(self, **kwargs):
        super(GatewayResource, self).__init__(**kwargs)
        self.created = kwargs.get('created', None)
        self.updated = kwargs.get('updated', None)
        self.upgrade_mode = kwargs.get('upgrade_mode', None)
        self.desired_version = kwargs.get('desired_version', None)
        self.instances = kwargs.get('instances', None)
        self.active_message_count = kwargs.get('active_message_count', None)
        self.latest_published_msi_version = kwargs.get('latest_published_msi_version', None)
        self.published_time_utc = kwargs.get('published_time_utc', None)
        self.installer_download = None
        self.minimum_version = None