src/vs/workbench/api/common/extHostCommands.ts/CommandsConverter/fromInternal
class CommandsConverter:	fromInternal(command: ICommandDto): vscode.Command | undefined {

		if (typeof command.$ident === 'number') {
			return this._cache.get(command.$ident);

		} else {
			return {
				command: command.id,
				title: command.title,
				arguments: command.arguments
			};
		}
	}