import * as $dara from '@darabonba/typescript';
export declare class InstanceMetadataOptions extends $dara.Model {
    /**
     * @remarks
     * Configuration of the ECS instance metadata access mode. Valid values:
     *
     * * `optional`: Compatible with both NAT mode and hardened mode.
     * * `required`: Enables hardened mode only (IMDSv2). After this mode is enabled, applications within edge zones cannot access ECS instance metadata through NAT mode.
     *
     * Default Value: `optional`.
     *
     * >Notice:
     *
     * * This parameter is currently available only to users on the whitelist. To use it, submit a ticket to request access.
     * * This parameter is supported only in ACK managed clusters of version 1.28 or later.
     *
     *
     *
     * > For more information about instance metadata access modes, see [Instance Metadata Access Mode](https://help.aliyun.com/document_detail/108460.html).
     *
     * @example
     * optional
     */
    httpTokens?: string;
    static names(): {
        [key: string]: string;
    };
    static types(): {
        [key: string]: any;
    };
    validate(): void;
    constructor(map?: {
        [key: string]: any;
    });
}