if (!API_KEY.equalsIgnoreCase("disabled") && API_KEY.length() != 32)
            throw new RuntimeException("SkUnity API key is not 32 characters long. Are you sure you entered a valid key? " +
                    "You should set it to \"disabled\" if you don't want to use the SkUnity service.");

        if (!API_KEY.equalsIgnoreCase("disabled") && API_KEY.length() != 32)
            throw new RuntimeException("SkUnity API key is not 32 characters long. Are you sure you entered a valid key? " +
                    "You should set it to \"disabled\" if you don't want to use the SkUnity service.");

private static final Map<String, AddonService> services = new HashMap<>();

@Override
public void onEnable() {
  instance = this;
  loadAddonServices();
  ...
}

private static void loadAddonServices() {
  services.put("github", new GithubService());
  services.put("skunity", new SkUnityService());
}

private static final Map<String, AddonService> services = new HashMap<>();

@Override
public void onEnable() {
  instance = this;
  loadAddonServices();
  ...
}

private static void loadAddonServices() {
  services.put("github", new GithubService());
  services.put("skunity", new SkUnityService());
}