code: public static VictimsDBInterface db() throws VictimsException {
          String driver = VictimsConfig.dbDriver();
          String dbUrl = VictimsConfig.dbUrl();
          if (!driver.equals(defaultDriver())) {
              if (!Driver.exists(driver) && dbUrl.equals(defaultURL())) {
                  // Custom drivers require custom urls
                  throw new VictimsException(
                          "A custom JDBC driver was specified without setting "
                                  + VictimsConfig.Key.DB_URL);
              }
          }
          return (VictimsDBInterface) new VictimsSqlDB();
      }
docs: Fetches an instance implementing {@link VictimsDBInterface} using the
  configured driver.
  
  @return A {@link VictimsDBInterface} implementation.
  @throws VictimsException