You need the antlr grammars and generated classes to use this class.
You can also use directly the Adl.g4 to generate camelCase grammar-classes for your archetype
The converted openehr-grammar is here:
https://github.com/BertVerhees/adl-aom/blob/master/src/main/grammar/nl/rosa/archetype/Adl.g4
convert the openEHR-grammar with is here:
https://github.com/BertVerhees/adl-aom/blob/master/src/main/java/nl/rosa/archetype/util/GrammarToCamelCaseConvertor.java
Bert