src/vs/platform/extensionManagement/common/extensionManagementIpc.ts/ExtensionManagementChannelClient/getTargetPlatform
class ExtensionManagementChannelClient:	getTargetPlatform(): Promise<TargetPlatform> {
		if (!this._targetPlatformPromise) {
			this._targetPlatformPromise = this.channel.call<TargetPlatform>('getTargetPlatform');
		}
		return this._targetPlatformPromise;
	}