Tidy up DeltaViewerSample.java and Adjustment when static class methods.
Change DeltaViewerSample#createObjectVertexOnConstructor() so that the sourceCell refers to the absolute position. Implemented DeltaViewerSample#createObjectReference() for Collection.
MethodExecutionVertex when resize ObjectVertex #3.
ObjectIdPair> put when call DeltaAliasCollector#changeTrackingObject().