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

OutputInterface getOutput() Get the output implementation.

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

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

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

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

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

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

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

OutputInterface getOutput() Get the output implementation.