@Override
    public void enableVersionedSemantics(final boolean useVersionedSemantics, final String parentNodeName) {
        enableVersionedSemantics(thisProcessorParameters(), useVersionedSemantics, parentNodeName);
        enableVersionedSemantics(otherProcessorParameters(), useVersionedSemantics, parentNodeName);
    }
The supplier which provides processor with KTable-KTable join merge functionality.
streams/src/main/java/org/apache/kafka/streams/kstream/internals/graph/KTableKTableJoinNode.java