objectBuilder.mergeIntoObject(original, true, clone, this, false, !descriptor.getCopyPolicy().buildsNewInstance());

                } else {

                    objectBuilder.mergeChangesIntoObject(original, objectChangeSet, clone, this, !descriptor.getCopyPolicy().buildsNewInstance());

                    // PERF: If PersistenceEntity is caching the primary key this must be cleared as the primary key may have changed in new objects.

                }

                updateCacheKeyProperties(unitOfWork, original, clone, objectChangeSet, descriptor);

            } else if (objectChangeSet == null) {

                // PERF: If we have no change set if it is existing, then no merging is required.

                // If it is new, then merge the object (normally a new object would have a change set, so this is an odd case.

                }

               

                if (objectChangeSet.isNew()) {

                    // PERF: If PersistenceEntity is caching the primary key this must be cleared as the primary key may have changed in new objects.

                }

               

                // Regardless if the object is new, old, valid or invalid, merging will ensure there is a stub of an object in the

                // shared cache for filling in foreign reference relationships. If merge did not occur in some cases (new  objects, garbage

                // collection objects, object read in a transaction) then no object would be in the shared cache and foreign reference

                    objectBuilder.mergeIntoObject(original, true, clone, this);

                } else {

                    objectBuilder.mergeChangesIntoObject(original, objectChangeSet, clone, this);

                    // PERF: If PersistenceEntity is caching the primary key this must be cleared as the primary key may have changed in new objects.

                }

            } else if (objectChangeSet == null) {

                // If we have no change set then we must merge the entire object.

                objectBuilder.mergeIntoObject(original, false, clone, this);

            } else {

                }

               

                if (objectChangeSet.isNew()) {

                    // PERF: If PersistenceEntity is caching the primary key this must be cleared as the primary key may have changed in new objects.

                }

               

                // Regardless if the object is new, old, valid or invalid, merging will ensure there is a stub of an object in the

                // shared cache for filling in foreign reference relationships. If merge did not occur in some cases (new  objects, garbage

                // collection objects, object read in a transaction) then no object would be in the shared cache and foreign reference