public boolean containsKey(final CIKey ciKey) {
        Objects.requireNonNull(ciKey);
        if (caseSensitiveMap.containsKey(ciKey.get())) {
            return true;
        } else {
            return caseinsensitiveMap.containsKey(ciKey);
        }
    }
A map that allows you to perform a lookup in both a case-sensitive and case-insensitive way
<p>
Not thread safe.
</p>
stroom-util/src/main/java/stroom/util/collections/MultiCaseMap.java