docs: public DescribeReplicationSubnetGroupsResult withReplicationSubnetGroups(ReplicationSubnetGroup... replicationSubnetGroups) {
          if (this.replicationSubnetGroups == null) {
              setReplicationSubnetGroups(new java.util.ArrayList<ReplicationSubnetGroup>(replicationSubnetGroups.length));
          }
          for (ReplicationSubnetGroup ele : replicationSubnetGroups) {
              this.replicationSubnetGroups.add(ele);
          }
          return this;
      }