Supported/Recommended way to set client convars?

[Hymns For Disco]

Is there a supported or recommended way of setting client convars? In Sourcemod there is a function SendConVarValue which will allow you to set the value of a cvar for a specific client, for example sv_airaccelerate or sv_autobunnyhopping. What is the best equivalent solution in source-python? I searched through the forums and found a solution that involved using ProtobufMessage from the package _messages, however I was not able to import this package and there was no description of where it was from.

[L'In20Cible]

→ players.entity.Player.send_convar_value(cvar_name, value)