I have possibly deep entity groups (think tree structure), but I want
a URL where the user can go to a specific node, like:

http://viewnode/<node-id>.

I'd like to use db.get() to directly access the node rather than query
based on node-id.

If I build the URL based on str(node.key()), then the strings can get
very big. Key.from_path() seems to want the entire path from the
parent. Is it really the case that the only way to get direct access
to an interior node in an entity group is provide the entire path to
that node?

Thanks, Jeff

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