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

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

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

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

OutputInterface getOutput() Get the output implementation.

void __construct(Filesystem $files,

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

bool hasArgument(string|int $name) Determine if the given argument is present

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

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