How do I get an EnumerationList (multiple choice)?

Accepted answer

I am sorry. I solved it in the following way.
IAttributeHandle attributeHandle = workItemServer.findAttribute(iProjectArea, attributeName, monitor);
IAttribute artifactAttribute = (IAttribute) itemService.fetchItem( attributeHandle, IRepositoryItemService.COMPLETE );
Object artifactObj = workItem.getValue(artifactAttribute);
ArrayList list = (ArrayList<String>) artifactObj;
for( int i=0;i < list.size() ; i++ ){
IEnumeration enumeration = workItemCommon.resolveEnumeration( artifactAttribute, monitor );
ILiteral literal = enumeration.findEnumerationLiteral( (Identifier<ILiteral>) list.get( i ) );
targetName = literal.getName();
}
Comments

The question would have been, how do I access work item attributes of type enumeration list using the EWM SDK or the Plain Java API. I would have suggested to look into https://rsjazz.wordpress.com/2013/01/02/working-with-work-item-attributes/
One other answer

Click on attribute in editor, see the results.