src/vs/platform/terminal/node/ptyService.ts/PtyService/getRevivedPtyNewId
class PtyService:	async getRevivedPtyNewId(id: number): Promise<number | undefined> {
		try {
			return this._revivedPtyIdMap.get(id)?.newId;
		} catch (e) {
			this._logService.warn(`Couldn't find terminal ID ${id}`, e.message);
		}
		return undefined;
	}