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