/**
 * Docker+machine version
 *
 * @see https://gitlab.com/gitlab-org/ci-cd/docker-machine
 */
export declare class DockerMachineVersion {
    /**
     * Docker+machine version 0.16.2-gitlab.15
     */
    static readonly V0_16_2_GITLAB_15: DockerMachineVersion;
    /**
     * Custom docker+machine version
     * @param version docker+machine version number
     */
    static of(version: string): DockerMachineVersion;
    readonly version: string;
    private constructor();
}