private int getMessagesForPart(int index) {
      MessagePattern.Part part = myPattern.getPart(index);
      if (part.getType() != MessagePattern.Part.Type.ARG_START) return 0;
      int limitPart = myPattern.getLimitPartIndex(index);
      int msgCount = 0;
      int nesting = -1;
      for (int i = index + 1; i < limitPart; i++) {
        part = myPattern.getPart(i);
        if (part.getType() == MessagePattern.Part.Type.MSG_START) {
          if (nesting == -1) {
            nesting = part.getValue();
          }
          else if (nesting != part.getValue()) {
            continue;
          }
          msgCount++;
        }
      }
      return msgCount;
    }
private int getMessagesForPart(int index)