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

void question(string $string) Write a string as question output.

void error(string $string) Write a string as error output.

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

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

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

void line(string $string, string $style = null, null|int|string $verbosity = null)

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

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

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