private static String getValidSameSite(@Nullable String sameSite) {
        return Arrays.stream(SameSite.values())
                     .map(SameSite::name)
                     .filter(name -> name.equalsIgnoreCase(sameSite))
                     .findFirst()
                     .orElse(SameSite.Lax.name());
    }
Returns a valid {@code "SameSite"} attribute.
This method returns {@code "Lax"} as default if the attribute is empty or invalid value.
core/src/main/java/com/linecorp/armeria/common/ClientCookieDecoder.java