/**
* Writes the site link to the custom metadata file (if the path is provided by the JEMMA_JOB_CUSTOM_METADATA_PATH environment variable).
*
* The custom metadata file will be updated with the following format:
*
* {
*   "siteLink": "https://example.com",
*   "siteVersion": "1.0.0"
* }
*
* @param siteLink The site link to write to the custom metadata file.
* @param siteVersion The site version to write to the custom metadata file.
*/
export declare function maybeUpdateJemmaCustomMetadata({ siteLink, siteVersion }: {
	siteLink: string
	siteVersion: string
}): void;