Example #1
0
 /**
  * Error output.
  *
  * General stream is the STDERR.
  *
  * @param  string  $msg  Error text.
  * @param  bool    $nl   Break a new line
  *
  * @return  IOInterface Return self to support chaining.
  */
 public function err($msg = '', $nl = true)
 {
     $this->command->err($msg, $nl);
     return $this;
 }