I have a hash map that I want to store as nbt. I write on FMLServerStoppingEvent and read on FMLServerStartingEvent.

 

The hash map is as so:

Public static Map<String, Set<Research>> researchedByPlayer = new HashMap<String, Set<Research>>();

 

I have a method to get the name of the research as a string aswell as find the research by a string.

I thought of doing it by looping through the keys of the map and saving each as a string in nbt then doing the same for the values by iterating through the set and getting the name to save. I don't know how I and then just do the reverse for loading. Is this the correct way or should I do it a different way?

I looked into IExtendedEntityProperties but it wouldn't work for what I want.

nvm, solved myself