code: public List<List<Object>> getParameterSet(final Statement statement) {
          List<List<Object>> result = new LinkedList<>();
          for (ShardingExecuteGroup<StatementExecuteUnit> each : getExecuteGroups()) {
              Optional<StatementExecuteUnit> target = getStatementExecuteUnit(statement, each);
              if (target.isPresent()) {
                  result = getParameterSets(target.get());
                  break;
              }
          }
          return result;
      }
docs: Get parameter sets.
  
  @param statement statement
  @return parameter sets