Squashed 'examples/DrawingTree/' content from commit c1597e0

git-subtree-dir: examples/DrawingTree
git-subtree-split: c1597e0c45a133e1d0aebff7895bc39895b4266c
Merge commit '6adff3492681503699aa129d518aab7ecbc73473' as 'examples/DrawingTree'