void info(string $string, null|int|string $verbosity = null) Write a string
void error(string $string, null|int|string $verbosity = null) Write a string
int callSilent(string $command, array $arguments = array()) Call another
int call(string $command, array $arguments = array()) Call another console
string ask(string $question, string $default = null) Prompt the user for
void line(string $string, string $style = null, null|int|string $verbosity = null)
bool hasOption(string $name) Determine if the given option is present.
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