anchor.diff:                                                                    if ( $INSTANCE != null )
                                                                         args[4] = $INSTANCE.text;
                                                                     if ( $relationshipReference.ref != null )
  -                                                                      args[5] = $relationshipReference.ref.get(1);
  +                                                                      args[5] = $relationshipReference.ref[1];
                                                                     populate( "operation", args );
                                                               }
                                      parameterList
  
positive.code: 
  @header
  {
  import java.util.ArrayList;
  import java.util.Map;
  import java.util.HashMap;
  import java.io.*;
  }
  
  
negative.code:                               
  
  relationshipReference
  returns [String[\] ref]
  //returns [RelationshipDeclaration.Reference ref]
                                : optionalDomainReference
                                  relationshipName            
                                                              { 
                                                                  String[] r = new String[2];
                                                                  r[0] = $optionalDomainReference.ref;
                                                                  r[1] =$relationshipName.name;
                                                                  $ref = r;
                                                              }
                                ;
  