/** Constraint: contents+=Alts* */
 protected void sequence_Entry(EObject context, Entry semanticObject) {
   genericSequencer.createSequence(context, semanticObject);
 }
 /** Constraint: (x='c' | x='d') */
 protected void sequence_LookAhead4(EObject context, LookAhead4 semanticObject) {
   genericSequencer.createSequence(context, semanticObject);
 }