docs: private static LeftTuple insertPeerLeftTuple(LeftTuple lt, LeftTupleSinkNode node, InternalWorkingMemory wm) {
          LeftInputAdapterNode.LiaNodeMemory liaMem = null;
          if ( node.getLeftTupleSource().getType() == NodeTypeEnums.LeftInputAdapterNode ) {
              liaMem = wm.getNodeMemory(((LeftInputAdapterNode) node.getLeftTupleSource()));
          }
  
          LeftTuple peer = node.createPeer(lt);
          Memory memory = wm.getNodeMemories().peekNodeMemory(node);
          if (memory == null || memory.getSegmentMemory() == null) {
              throw new IllegalStateException("Defensive Programming: this should not be possilbe, as the addRule code should init child segments if they are needed ");
          }
  
          if ( liaMem == null) {
              memory.getSegmentMemory().getStagedLeftTuples().addInsert(peer);
          } else {
              // If parent is Lian, then this must be called, so that any linking or unlinking can be done.
              LeftInputAdapterNode.doInsertSegmentMemory(wm, true, liaMem, memory.getSegmentMemory(), peer, node.getLeftTupleSource().isStreamMode());
          }
  
          return peer;
      }