src/vs/platform/extensionManagement/node/extensionsWatcher.ts/ExtensionsWatcher/registerListeners
class ExtensionsWatcher:	private registerListeners(): void {
		this._register(this.userDataProfilesService.onDidChangeProfiles(e => this.onDidChangeProfiles(e.added, e.removed)));
		this._register(this.extensionsProfileScannerService.onAddExtensions(e => this.onAddExtensions(e)));
		this._register(this.extensionsProfileScannerService.onDidAddExtensions(e => this.onDidAddExtensions(e)));
		this._register(this.extensionsProfileScannerService.onRemoveExtensions(e => this.onRemoveExtensions(e)));
		this._register(this.extensionsProfileScannerService.onDidRemoveExtensions(e => this.onDidRemoveExtensions(e)));
		this._register(this.fileService.onDidFilesChange(e => this.onDidFilesChange(e)));
	}