bool isDebug() Returns whether verbosity is debug (-vvv).
bool isVerbose() Returns whether verbosity is verbose (-v).
bool isQuiet() Returns whether verbosity is quiet (-q).
setFormatter(
setVerbosity(int $level) Sets the verbosity of the output.
bool isVeryVerbose() Returns whether verbosity is very verbose (-vv).
write(string|array $messages, bool $newline = false, int $options = self::OUTPUT_NORMAL) Writes a
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