code: public function stderr($string)
      {
          if ($this->isColorEnabled(\STDERR)) {
              $args = func_get_args();
              array_shift($args);
              $string = Console::ansiFormat($string, $args);
          }
  
          return fwrite(\STDERR, $string);
      }
docs: Prints a string to STDERR.
  
  You may optionally format the string with ANSI codes by
  passing additional parameters using the constants defined in [[\yii\helpers\Console]].
  
  Example:
  
  ```
  $this->stderr('This will be red and underlined.', Console::FG_RED, Console::UNDERLINE);
  ```
  
  @param string $string the string to print
  @return int|bool Number of bytes printed or false on error