Maxon's Python plugin structure page
https://developers.maxon.net/docs/Cinema4DPythonSDK/html/misc/pluginstructure.html#plugin-messages
mentions three different API calls PluginStart(), PluginEnd() and PluginMessage() in the message ID section. However, all the Python examples that I've found only implement PluginMessage(). Does this mean, that only PluginMessage() applies to Python plugins, and the other two are for C++ plugins only? I wrote a small Python test plugin with all three functions, and only PluginMessage() was ever called (with different message IDs).
I have tried to find some verification for this in Maxon's SDK documentation but haven't found anything so far (but I'm pretty new with this, so I might have missed something relevant...)