code: public function randomValues($size)
      {
          $keys = $this->randomKeys($size);
  
          return $keys->isEmpty() ? $keys : $this->pick($keys);
      }
docs: Returns a bag with a random number of key/value pairs.
  
  @param int $size Number of pairs
  
  @throws \InvalidArgumentException when the bag is empty or the given $size is greater than the number of items
  
  @return static