requireWasCalled example

  protected function handler() {
    if (!$this->handler) {
      $this->handler = new Handler($this->composer, $this->io);
      // On instantiation of our handler, notify it if the 'require' command       // was executed.       if ($this->requireWasCalled) {
        $this->handler->requireWasCalled();
      }
    }
    return $this->handler;
  }

}