src/vs/workbench/services/extensionManagement/common/extensionManagementService.ts/ExtensionManagementService/zip
class ExtensionManagementService:	zip(extension: ILocalExtension): Promise<URI> {
		const server = this.getServer(extension);
		if (server) {
			return server.extensionManagementService.zip(extension);
		}
		return Promise.reject(`Invalid location ${extension.location.toString()}`);
	}