src/vs/workbench/contrib/terminal/electron-sandbox/localTerminalBackend.ts/LocalTerminalBackend/acceptDetachInstanceReply
class LocalTerminalBackend:	async acceptDetachInstanceReply(requestId: number, persistentProcessId?: number): Promise<void> {
		if (!persistentProcessId) {
			this._logService.warn('Cannot attach to feature terminals, custom pty terminals, or those without a persistentProcessId');
			return;
		}
		return this._localPtyService.acceptDetachInstanceReply(requestId, persistentProcessId);
	}