LeftTupleSink lts = startNode;
while (!NodeTypeEnums.isTerminalNode(lts) && lts.getLeftTupleSource().getType() != NodeTypeEnums.RightInputAdaterNode ) {
if (NodeTypeEnums.isBetaNode(lts)) {
BetaNode bn = (BetaNode) lts;
if (!bn.isRightInputIsRiaNode() ) {
final PropagationContext pctx = new PropagationContextImpl(wm.getNextPropagationIdCounter(),
PropagationContext.RULE_ADDITION,
null,
null,
null);
bn.getRightInput().updateSink(bn,