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

void line(string $string) Write a string as standard output.

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

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

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

void table(array $headers, Arrayable|array $rows,

OutputInterface getOutput() Get the output implementation.

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

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

void __construct(Filesystem $files)