public static ExpressionTerm copyTerm(final ExpressionTerm term) {
        if (term == null) {
            return null;
        }

        return ExpressionTerm
                .builder()
                .enabled(term.getEnabled())
                .field(term.getField())
                .condition(term.getCondition())
                .value(term.getValue())
                .docRef(term.getDocRef())
                .build();
    }
@return True if there are at least one enabled term under the expressionOperator
stroom-query/stroom-query-api/src/main/java/stroom/query/api/ExpressionUtil.java