To try any of the examples, copy them over to:
$XDG_DATA_DIR/share/caja-python/extensions/
or:
~/.local/share/caja-python/extensions/
FYI, it is still possible to load plugins from the old locations.
Then restart caja.
Hint: if you're testing an extension that you're developing, it may
be useful to start a 'private' instance of caja, like this:
$ mkdir /tmp/testing
$ export TMPDIR=/tmp/testing
$ caja --no-desktop
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