CallTreeNode child = node.getChildByName(stripCallDelims(frames[index]));
      if (child == null) {
        child = new CallTreeNode(stripCallDelims(frames[index]));
      }
      Integer w = node.getChildrens().get(child);
      if (w == null) {
        w = 0;
      }
      node.getChildrens().put(child, w + count);
      node = child;