array arguments() Get all of the arguments passed to the command.

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

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

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

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

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

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

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

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

OutputInterface getOutput() Get the output implementation.