OutputInterface getOutput() Get the output implementation.

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

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

void __construct(Composer $composer,

void info(string $string) Write a string as information output.

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

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

OutputInterface getOutput() Get the output implementation.

static array castCollection(Collection $collection)

void warn(string $string) Write a string as warning output.