/**
  * @param Number $number
  * @return bool
  */
 public function create(Number $number)
 {
     $sql = "INSERT INTO number_buddy(number_value,buddy_list) VALUES( :number,:buddies)";
     $statement = $this->getPdo()->prepare($sql);
     $bindParams = [':number' => $number->getValue(), ':buddies' => json_encode($number->getBuddies())];
     return $statement->execute($bindParams);
 }