public String getContent(String boldOpenTag, String boldCloseTag, String separatorTag) {
        StringBuilder b = new StringBuilder();
        Iterator<FieldPart> iter = ensureTokenized().iterator();
        while(iter.hasNext()) {
            FieldPart f = iter.next();
            if (f instanceof BoldOpenFieldPart && boldOpenTag != null && boldOpenTag.length() > 0)
                b.append(boldOpenTag);
            else if (f instanceof BoldCloseFieldPart && boldCloseTag != null && boldCloseTag.length() > 0)
                b.append(boldCloseTag);
            else if (f instanceof SeparatorFieldPart && separatorTag != null && separatorTag.length() > 0)
                b.append(separatorTag);
            else
                b.append(f.getContent());
        }
        return b.toString();
    }
Returns the content of this field, using the arguments as bolding tags
container-search/src/main/java/com/yahoo/prelude/hitfield/HitField.java