LPS-34320 Add new method to get the fields content of a ddmstructure separated by space
LPS-34320 Index the content of a ddmstructure in only one field
LPS-34320 SF - make method name more descriptive
LPS-34320 SF - remove unused method
LPS-38484 Don't add display-date if the article does not have a display date
LPS-38484 SF - don't use validator for objects
LPS-38484 SF