Map<Location, Block> map = new HashMap<>();
map.put(Location.fromXYZ(2,3,4), world.getBlockAtXYZ(2,3,4));

@SuppressWarnings("rawtypes")
Map<Object, Block> castMap = (Map<Object, Block>)map;
castMap.put("lmao", world.getBlockAtXYZ(100, 4, -100));