protected function configure()
{
$this->setName('debug:config')->setDefinition(array(new InputArgument('filter', InputArgument::OPTIONAL, 'Show details for all config matching this filter'), new InputOption('configphp', null, InputOption::VALUE_NONE, 'Check if you are using Config PHP File')))->setDescription('Shows a list of config file')->setHelp(<<<EOF
The <info>%command.name%</info> command outputs a list of config file,
Output can be filtered with an optional argument.
<info>php %command.full_name%</info>
The command lists all config.
<info>php %command.full_name% database</info>
The command lists the database yml file.
For filter, yml file name or key name can be set.
<info>php %command.full_name% --configphp</info>
The command checks whether Config PHP File is used.
EOF
);
}