code: public String findDefaultDriver(String url) {
          for (Database database : this.getImplementedDatabases()) {
              String defaultDriver = database.getDefaultDriver(url);
              if (defaultDriver != null) {
                  return defaultDriver;
              }
          }
  
          return null;
      }
docs: Returns the Java class name of the JDBC driver class (e.g. "org.mariadb.jdbc.Driver")
  for the specified JDBC URL, if any Database class supports that URL.
  
  @param url the JDBC URL to analyse
  @return a Database object supporting the URL. May also return null if the JDBC URL is unknown to all handlers.