public function save(Emoji $emoji)
 {
     $connection = static::connectDatabase();
     $dbQuery = $connection->prepare('INSERT INTO emojis (emojiname, emojichar, category, created_by, created_at, updated_at) VALUES(?,?,?,?,?,?)');
     $name = $emoji->getName();
     $char = $emoji->getChar();
     $category = $emoji->getCategory();
     $createdBy = $emoji->getCreatedBy();
     $createdAt = $emoji->getCreatedAt();
     $updatedAt = $emoji->getUpdatedAt();
     $dbQuery->bindParam(1, $name);
     $dbQuery->bindParam(2, $char);
     $dbQuery->bindParam(3, $category);
     $dbQuery->bindParam(4, $createdBy);
     $dbQuery->bindParam(5, $createdAt);
     $dbQuery->bindParam(6, $updatedAt);
     $dbQuery->execute();
     if ($dbQuery->rowCount() > 0) {
         return true;
     } else {
         throw new PDOException("Cannot save emoji data.");
     }
 }