code: 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;
      }
docs: <p>
  Contains a list of backtracks for the user.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDBClusterBacktracks(java.util.Collection)} or {@link #withDBClusterBacktracks(java.util.Collection)}
  if you want to override the existing values.
  </p>
  
  @param dBClusterBacktracks
  Contains a list of backtracks for the user.
  @return Returns a reference to this object so that method calls can be chained together.