Also test ParentDistance() in the case where the tree is built and mappings are used.
Also test ParentDistance() in the case where the tree is built and mappings are
used.


trungda/mlpack,ersanliqiao/mlpack,darcyliu/mlpack,ersanliqiao/mlpack,bmswgnp/mlpack,thirdwing/mlpack,minhpqn/mlpack,erubboli/mlpack,theranger/mlpack,datachand/mlpack,ajjl/mlpack,ranjan1990/mlpack,BookChan/mlpack,bmswgnp/mlpack,trungda/mlpack,darcyliu/mlpack,stereomatchingkiss/mlpack,darcyliu/mlpack,bmswgnp/mlpack,palashahuja/mlpack,lezorich/mlpack,Azizou/mlpack,Azizou/mlpack,lezorich/mlpack,erubboli/mlpack,palashahuja/mlpack,BookChan/mlpack,ajjl/mlpack,trungda/mlpack,theranger/mlpack,stereomatchingkiss/mlpack,ersanliqiao/mlpack,ranjan1990/mlpack,minhpqn/mlpack,datachand/mlpack,erubboli/mlpack,chenmoshushi/mlpack,datachand/mlpack,stereomatchingkiss/mlpack,minhpqn/mlpack,chenmoshushi/mlpack,lezorich/mlpack,ajjl/mlpack,ranjan1990/mlpack,chenmoshushi/mlpack,Azizou/mlpack,thirdwing/mlpack,thirdwing/mlpack,theranger/mlpack,palashahuja/mlpack,BookChan/mlpack