code: public function getMany($n)
      {
          if (!is_integer($n) || $n < 2) {
              throw new \InvalidArgumentException('You must take 2 or more items in this case.');
          }
  
          $arr_out = array();
  
          for ($i = 0; $i < $n; $i++) {
              $arr_out[] = $this->get();
          }
  
          return $arr_out;
      }
docs: Get many Complex numbers.
  
  @throw \InvalidArgumentException If given amount is less than 2
  @param  integer $n Amount of complex numbers to get. Must be greater than 2
  @access public
  @return array