string secret(string $question, bool $fallback = true) Prompt the user

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

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

OutputInterface getOutput() Get the output implementation.

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

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

string secret(string $question, bool $fallback = true) Prompt the user

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

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

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