manually reload Dolphin session?

[Bug Reporter]

Is there a way to manually open (reload) a prior Dolphin session?

I'm running KDE on Arch.  Here's some system info:

   - plasmashell --version: plasmashell 5.12.5
   - dolphin --version: dolphin 18.04.0
   - Linux 4.16.6-1-ARCH #1 SMP PREEMPT Mon Apr 30 12:30:03 UTC 2018 x86_64
   GNU/Linux


I often keep a lot of tabs open in Dolphin and I would like to be able to
open all those tabs / locations again. I have seen an old feature request
for Dolphin saved sessions. I'm not asking for that. I just want to know if
I can do it manually. For example, I see some older session files that seem
to belong to Dolphin. Here's an example:

/home/myuser/.config/session/dolphin_10d1d6cd65000151042956000000012150067_1510464775_250905

Are files like that currently used by Dolphin? If I have one, can I reload
it into Dolphin?

Is there another way to manually reload a prior Dolphin session? I'm
looking for any way to accomplish this and I don't expect a GUI feature.

Thanks
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