Connl2012 writer uses WordSense, but does not declare it

[jcklie]

See

    private void convert(JCas aJCas, PrintWriter aOut)
    {
        Map<Token, Collection<SemPred>> predIdx = indexCovered(aJCas, Token.class, SemPred.class);
        Map<SemArg, Collection<Token>> argIdx = indexCovered(aJCas, SemArg.class, Token.class);
        Map<Token, Collection<NamedEntity>> neIdx = indexCovering(aJCas, Token.class,
                NamedEntity.class);
        Map<Token, Collection<WordSense>> wordSenseIdx = indexCovered(aJCas, Token.class,
                WordSense.class);
        Map<Token, Collection<CoreferenceLink>> corefIdx = indexCovering(aJCas, Token.class,
                CoreferenceLink.class);
        Map<CoreferenceLink, Integer> corefChainIdx = new HashMap<>();
        ...
    }