def METHOD_NAME(application_type_name: Optional[str] = None,
                         cluster_name: Optional[str] = None,
                         resource_group_name: Optional[str] = None,
                         opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetApplicationTypeResult:
    """
    Get a Service Fabric application type name resource created or in the process of being created in the Service Fabric cluster resource.
    :param str application_type_name: The name of the application type name resource.
    :param str cluster_name: The name of the cluster resource.
    :param str resource_group_name: The name of the resource group.
    """
    __args__ = dict()
    __args__['applicationTypeName'] = application_type_name
    __args__['clusterName'] = cluster_name
    __args__['resourceGroupName'] = resource_group_name
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('azure-native:servicefabric/v20210601:getApplicationType', __args__, opts=opts, typ=GetApplicationTypeResult).value
    return AwaitableGetApplicationTypeResult(
        etag=pulumi.get(__ret__, 'etag'),
        id=pulumi.get(__ret__, 'id'),
        location=pulumi.get(__ret__, 'location'),
        name=pulumi.get(__ret__, 'name'),
        provisioning_state=pulumi.get(__ret__, 'provisioning_state'),
        system_data=pulumi.get(__ret__, 'system_data'),
        tags=pulumi.get(__ret__, 'tags'),
        type=pulumi.get(__ret__, 'type'))