src/vs/platform/extensionManagement/common/extensionManagementIpc.ts/ExtensionManagementChannelClient/getInstalled
class ExtensionManagementChannelClient:	getInstalled(type: ExtensionType | null = null, extensionsProfileResource?: URI): Promise<ILocalExtension[]> {
		return Promise.resolve(this.channel.call<ILocalExtension[]>('getInstalled', [type, extensionsProfileResource]))
			.then(extensions => extensions.map(extension => transformIncomingExtension(extension, null)));
	}