@Deprecated
  @Contract(value = "null,!null -> false; !null,null -> false; null,null -> true", pure = true)
  public static boolean equal(@Nullable String arg1, @Nullable String arg2) {
    return Objects.equals(arg1, arg2);
  }
@Deprecated
  @Contract(value = "null,!null -> false; !null,null -> false; null,null -> true", pure = true)
  public static boolean equal(@Nullable String arg1, @Nullable String arg2)