src/vs/workbench/api/common/extHostOutput.ts/ExtHostOutputService/createOutputChannelFromLogFile
class ExtHostOutputService:	createOutputChannelFromLogFile(name: string, file: URI): vscode.OutputChannel {
		name = name.trim();
		if (!name) {
			throw new Error('illegal argument `name`. must not be falsy');
		}
		if (!file) {
			throw new Error('illegal argument `file`. must not be falsy');
		}
		return new ExtHostLogFileOutputChannel(name, file, this._proxy);
	}