src/vs/platform/extensionManagement/node/extensionManagementService.ts/ExtensionManagementService/createDefaultInstallExtensionTask
class ExtensionManagementService:	protected createDefaultInstallExtensionTask(manifest: IExtensionManifest, extension: URI | IGalleryExtension, options: ServerInstallOptions & ServerInstallVSIXOptions): IInstallExtensionTask {
		return URI.isUri(extension) ? new InstallVSIXTask(manifest, extension, options, this.galleryService, this.extensionsScanner, this.logService) : new InstallGalleryExtensionTask(manifest, extension, options, this.extensionsDownloader, this.extensionsScanner, this.logService);
	}