Tags: patch

Pretty much as the subject describes; this should allow for users to
lazily load hierarchy branches when loading everything at once would
otherwise be too consuming, up-front (or if dealing with an infinite
tree).

My current use-case with this feature is mapping a file hierarchy on a
server; each node has to be queried against the API of the server so it
only makes sense to make the HTTP call when the user wants to load the
node (rather than a bunch of HTTP calls, all at once).



In GNU Emacs 28.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.30, cairo version 1.16.0)
System Description: Guix System

Configured using:
 'configure
 CONFIG_SHELL=/gnu/store/4y5m9lb8k3qkb1y9m02sw9w9a6hacd16-bash-minimal-5.1.8/bin/bash
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 --enable-fast-install --with-modules --with-cairo
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