Fix unit tests by adding @UsedForTesting

        return getProbabilityNative(mNativeDict, codePoints);

    }

    // TODO: Add a batch process version (isValidBigramMultiple?) to avoid excessive numbers of jni

    // calls when checking for changes in an entire dictionary.

    @UsedForTesting

    public boolean isValidBigram(final String word0, final String word1) {

        return getBigramProbability(word0, word1) != NOT_A_PROBABILITY;

    }