class DatabaseConnector extends StdCouchDbConnector {

    public boolean contains(String id) {
        return (id != null) && super.contains(id);
    }

    public  DatabaseConnector(HttpClient httpClient, String dbName);
    public  DatabaseConnector(Supplier<HttpClient> httpClient, String dbName);
    public  DatabaseConnector(HttpClient httpClient, String dbName, MapperFactory mapperFactory);
    private  DatabaseConnector(String dbName, DatabaseInstance instance, MapperFactory mapperFactory);

}