code: @NonNull
    public static Caffeine<Object, Object> from(CaffeineSpec spec) {
      Caffeine<Object, Object> builder = spec.toBuilder();
      builder.strictParsing = false;
      return builder;
    }
docs: Constructs a new {@code Caffeine} instance with the settings specified in {@code spec}.
  
  @param spec the specification to build from
  @return a new instance with the specification's settings