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

string choice(string $question, array $choices, string $default = null, mixed $attempts = null, bool $multiple = null)

string askWithCompletion(string $question, array $choices, string $default = null)

void question(string $string, null|int|string $verbosity = null) Write

string askWithCompletion(string $question, array $choices, string $default = null)

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

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

string askWithCompletion(string $question, array $choices, string $default = null)

void error(string $string, null|int|string $verbosity = null) Write a string

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