src/vs/workbench/electron-sandbox/window.ts/NativeWindow/onAddFoldersRequest
class NativeWindow:	private onAddFoldersRequest(request: IAddFoldersRequest): void {

		// Buffer all pending requests
		this.pendingFoldersToAdd.push(...request.foldersToAdd.map(folder => URI.revive(folder)));

		// Delay the adding of folders a bit to buffer in case more requests are coming
		if (!this.addFoldersScheduler.isScheduled()) {
			this.addFoldersScheduler.schedule();
		}
	}