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

OutputInterface getOutput() Get the output implementation.

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

void __construct(Filesystem $files,

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

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

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

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