sudo_unstable_version
Parameters: none
Return value: String containing a human-readable name and version of the implementation of the JSON-RPC server.
The return value shouldn't be parsed by a program. It is purely meant to be shown to a human.
Note: Example return values: "polkadot 0.9.12-ec34cf7e0-x86_64-linux-gnu", "smoldot-light 0.5.4"