bool isDebug() Returns whether verbosity is debug (-vvv).
OutputFormatterInterface
bool isQuiet() Returns whether verbosity is quiet (-q).
bool isDecorated() Gets the decorated flag.
setVerbosity(int $level) Sets the verbosity of the output.
int getVerbosity() Gets the current verbosity of the output.
writeln(string|array $messages, int $options) Writes a message to the output and adds a newline at
class StreamOutput extends Output
setDecorated(bool $decorated) Sets the decorated flag.
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