src/vs/workbench/contrib/files/browser/workspaceWatcher.ts/WorkspaceWatcher/onDidChangeWorkspaceFolders
class WorkspaceWatcher:	private onDidChangeWorkspaceFolders(e: IWorkspaceFoldersChangeEvent): void {

		// Removed workspace: Unwatch
		for (const removed of e.removed) {
			this.unwatchWorkspace(removed);
		}

		// Added workspace: Watch
		for (const added of e.added) {
			this.watchWorkspace(added);
		}
	}