think\console\output\Question::setHidden PHP Method

    public function setHidden($hidden)
    {
        if ($this->autocompleterValues) {
            throw new \LogicException('A hidden question cannot use the autocompleter.');
        }
        $this->hidden = (bool) $hidden;
        return $this;
    }

 public function askHidden(Input $input, $question, $validator = null)
 {
     $question = new Question($question);
     $question->setHidden(true);
     $question->setValidator($validator);
     return $this->askQuestion($input, $question);
 }