[Request] [language/sd-bus] [tools/sd-bus IPC] [tools/d-bus IPC]

I'd like to see a tutorial/demo for the sd-bus IPC (Intper-process Communication) protocol on Linux.

I'm still trying to figure it out myself.

Resources to get started:
1. https://en.wikipedia.org/wiki/D-Bus
2. [[A list of available D-Bus services](https://unix.stackexchange.com/questions/46301/a-list-of-available-d-bus-services)](https://unix.stackexchange.com/a/46309/114401)
3. \*\*\*\*\*sdbus list of all functions and things: https://www.freedesktop.org/software/systemd/man/index.html
4. \*\*\*\*\*official sdbus specification: https://dbus.freedesktop.org/doc/dbus-specification.html#basic-types

Start with the linked D-Bus overview, service list, sd-bus reference, and official specification. Define a focused Linux sd-bus tutorial or demo based on those resources; done means the repository contains a self-contained, accurate introduction to the protocol and its use.

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