code: private Tag entityToTag(String id, Entity tagEntity) {
      Tag tag = tagFactory.create(id);
      tag.setObjectIri(tagEntity.getString(EMX_TAG_OBJECT_IRI));
      tag.setLabel(tagEntity.getString(EMX_TAG_LABEL));
      tag.setRelationLabel(tagEntity.getString(EMX_TAG_RELATION_LABEL));
      tag.setCodeSystem(tagEntity.getString(EMX_TAG_CODE_SYSTEM));
      tag.setRelationIri(tagEntity.getString(EMX_TAG_RELATION_IRI));
  
      return tag;
    }
docs: Transforms an {@link Entity} to a {@link Tag}