public Analyzer getCommonTokensAnalyzer() {
        return commonTokensAnalyzer;
    }
This analyzer should be used to generate common tokens lists from
large corpora.  It is not used by tika-eval in profiling or comparing.

@return
tika-eval/tika-eval-core/src/main/java/org/apache/tika/eval/core/tokens/AnalyzerManager.java