DOC: add a todo for tomorrow

include/lsgrmGraphOperations.txx

@@ -96,6 +96,8 @@ MergeAllGraphsAndAchieveSegmentation(
 
   //  // Write output graph to the output graph directory
   //  WriteGraph<TSegmenter>(segmenter.m_Graph, tmpDir, 0, 0);
+  
+  // TODO: use std::sort to sort the graph before the polygon filling
   typename TSegmenter::LabelImageType::SizeType outSize;
   outSize[0] = imageWidth;
   outSize[1] = imageHeight;