src/vs/workbench/api/browser/mainThreadTerminalService.ts/MainThreadTerminalService/_onTerminalProcessIdReady
class MainThreadTerminalService:	private _onTerminalProcessIdReady(terminalInstance: ITerminalInstance): void {
		if (terminalInstance.processId === undefined) {
			return;
		}
		this._proxy.$acceptTerminalProcessId(terminalInstance.instanceId, terminalInstance.processId);
	}