CratesPlugin plugin = CratesAPI.PLUGIN; // ExcellentCrates instance
UserManager userManager = CratesAPI.getUserManager(); // User manager.
CrateManager crateManager = CratesAPI.getCrateManager(); // Crate manager.
KeyManager keyManager = CratesAPI.getKeyManager(); // Key manager.
CrateUser user = userManager.getUserData(Player player); // Get user data.
CrateUser user = userManager.getUserData(UUID playerId);
CrateUser user = userManager.getUserData(String playerName);