code: public java.util.List<RevisionTarget> getRevisionTargets() {
          if (revisionTargets == null) {
              revisionTargets = new com.amazonaws.internal.SdkInternalList<RevisionTarget>();
          }
          return revisionTargets;
      }
docs: <p>
  A list of <code>RevisionTarget</code> objects, where each object describes the database revision that a cluster
  can be updated to.
  </p>
  
  @return A list of <code>RevisionTarget</code> objects, where each object describes the database revision that a
  cluster can be updated to.