URI dgoBRef = runMigration(migrate1,dgoA.getPermanentUri(),false);
wfResultItem.addLogInfo("completed migration A-B");
wfResultItem.addLogInfo("starting migration B-C");
URI dgoCRef = runMigration(migrate2,dgoBRef,false);
wfResultItem.addLogInfo("completed migration B-C");
wfResultItem.addLogInfo("starting migration C-D");
URI dgoDRef = runMigration(migrate3,dgoCRef,false);
wfResultItem.addLogInfo("completed migration C-D");
wfResultItem.addLogInfo("starting migration D-E");
//this object is documented as main experiment outcome file
URI dgoERef = runMigration(migrate4,dgoDRef,true);