code: public Optional<TableRule> findTableRuleByActualTable(final String actualTableName) {
          for (TableRule each : tableRules) {
              if (each.isExisted(actualTableName)) {
                  return Optional.of(each);
              }
          }
          return Optional.absent();
      }
docs: Find table rule via actual table name.
  
  @param actualTableName actual table name
  @return table rule