string askQuestion(Question $question)

bool hasOption(string $name) Returns true if an InputOption object exists by name.

setRow($column, array $row) Parameters $column

static string|null getFormatDefinition(string $name) Gets the format for a given name

setHelperSet(HelperSet $helperSet = null)

progressAdvance(int $step = 1) Advances the progress output X steps.

clear() Removes the progress bar from the current line. This is useful if you wish to write

writeln(string|array $messages, int $options) Writes a message to the output and adds a newline at

int getVerbosity() Gets the current verbosity of the output.

setVerbosity(int $level) Sets the verbosity of the output.