bool hasOption(string $name) Determine if the given option is present.

string ask(string $question, string $default = null) Prompt the user for

bool confirm(string $question, bool $default = false) Confirm a question

void __construct(Filesystem $files,

int run(InputInterface $input, OutputInterface $output) Run the console

void fire() Execute the console command.

string|array option(string $key = null) Get the value of a command option

int call(string $command, array $arguments = array()) Call another console