How to use

RexUtil$FieldAccessFinder

in

org.apache.calcite.rex

    new RexUtil.FieldAccessFinder();
RexUtil.apply(visitor, correlatedJoinKeys, null);
List<RexFieldAccess> correlatedKeyList =
    visitor.getFieldAccessList();

  new RexUtil.FieldAccessFinder();
RexUtil.apply(visitor, correlatedJoinKeys, null);
List<RexFieldAccess> correlatedKeyList =
  visitor.getFieldAccessList();

    new RexUtil.FieldAccessFinder();
RexUtil.apply(visitor, correlatedJoinKeys, null);
List<RexFieldAccess> correlatedKeyList =
    visitor.getFieldAccessList();

  new RexUtil.FieldAccessFinder();
RexUtil.apply(visitor, correlatedJoinKeys, null);
List<RexFieldAccess> correlatedKeyList =
  visitor.getFieldAccessList();

    new RexUtil.FieldAccessFinder();
RexUtil.apply(visitor, correlatedJoinKeys, null);
List<RexFieldAccess> correlatedKeyList =
    visitor.getFieldAccessList();