*
     * @param self the {@link MapProperty}
     * @param key the key
     * @param value the value or a {@link Provider} of the value
     */
    @SuppressWarnings("unchecked")
    public static <K, V> void putAt(MapProperty<K, V> self, K key, Object value) {
        if (value instanceof Provider<?>) {
            self.put(key, (Provider) value);
        } else {
            self.put(key, (V) value);
        }
    }

			ExposeHeaders: []string{"header3"},
			MaxAge:        &durationpb.Duration{Seconds: 2},
		}, valid: true},
		{name: "bad method", in: &networking.CorsPolicy{
			AllowMethods:  []string{"GET", "PUTT"},
			AllowHeaders:  []string{"header1", "header2"},
			ExposeHeaders: []string{"header3"},
			MaxAge:        &durationpb.Duration{Seconds: 2},
		}, valid: false},
		{name: "bad header", in: &networking.CorsPolicy{