int callSilent(string $command, array $arguments = array()) Call another
void __construct(string $signature, Closure $callback)
string secret(string $question, bool $fallback = true) Prompt the user
void warn(string $string, null|int|string $verbosity = null) Write a string
OutputInterface getOutput() Get the output implementation.
void question(string $string) Write a string as question output.
bool confirm(string $question, bool $default = false) Confirm a question
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