docs: public DescribeDBClusterBacktracksResult withDBClusterBacktracks(DBClusterBacktrack... dBClusterBacktracks) {
          if (this.dBClusterBacktracks == null) {
              setDBClusterBacktracks(new com.amazonaws.internal.SdkInternalList<DBClusterBacktrack>(dBClusterBacktracks.length));
          }
          for (DBClusterBacktrack ele : dBClusterBacktracks) {
              this.dBClusterBacktracks.add(ele);
          }
          return this;
      }