Field playerlistenerfield = MultiverseCore.class.getDeclaredField("playerListener");
playerlistenerfield.setAccessible(true);
playerlistenerfield.set(core, pl);
// Set entityListener
MVEntityListener el = PowerMockito.spy(new MVEntityListener(core));
Field entitylistenerfield = MultiverseCore.class.getDeclaredField("entityListener");
entitylistenerfield.setAccessible(true);
entitylistenerfield.set(core, el);
// Set weatherListener