src/vs/platform/extensionManagement/node/extensionManagementService.ts/ExtensionManagementService/unzip
class ExtensionManagementService:	async unzip(zipLocation: URI): Promise<IExtensionIdentifier> {
		this.logService.trace('ExtensionManagementService#unzip', zipLocation.toString());
		const local = await this.install(zipLocation);
		return local.identifier;
	}