public function ormConvertMapping(
        $toType,
        $destPath,
        $opt = [
            'filter'        => null,
            'force'         => null,
            'from-database' => null,
            'extend'        => null,
            'num-spaces'    => 4,
            'namespace'     => null,
        ]
    ) {
        $validOpts = [
            'filter',
            'force',
            'from-database',
            'extend',
            'num-spaces',
            'namespace',
        ];
        $command = new Command\ConvertMappingCommand;

        $arg = [
            'to-type'   => $toType,
            'dest-path' => $destPath,
        ];

        $this->runDoctrineCommand($command, $opt, $validOpts, $arg);
    }