export declare function resolveInstallIdPath(explicitPath?: string): string; export declare function getOrCreateInstallId(explicitPath?: string): Promise; export declare function getStoredAttributionRef(explicitPath?: string): Promise; export declare function setStoredAttributionRef(explicitPath: string | undefined, attributionRef: string): Promise; export declare function resolveStarterGrantRef(explicitPath?: string, explicitRef?: string): Promise;