return Objects.equals(s1, s2);
    }

    /**
     * @deprecated Use {@link Objects#hashCode(Object)}
     */
    @Deprecated
    public static int hash(Object obj) {
        return obj != null ? obj.hashCode() : 0;
    }

    public static int pluginHashCode(Plugin plugin) {
        int hash = 17;

        hash = hash * 31 + Objects.hashCode(plugin.getGroupId());