public String getAnnotationPropsAsString() {
        StringBuilder sb = new StringBuilder();
        sb.append("coveredText");
        if (annotationProps != null) {
            for (CTAKESAnnotationProperty property : annotationProps) {
                sb.append(separatorChar);
                sb.append(property.getName());
            }
        }
        return sb.toString();
    }
Returns a string containing a comma-separated list of {@link CTAKESAnnotationProperty}
names that will be included into cTAKES metadata.

@return
tika-parsers/tika-parsers-ml/tika-parser-nlp-module/src/main/java/org/apache/tika/parser/ctakes/CTAKESConfig.java