private void createNewChainLinkAnnotation(ChainAdapter aAdapter,
JCas aJCas) {
LOG.trace("createNewChainLinkAnnotation()");
AnnotatorState state = getModelObject();
Selection selection = state.getSelection();
AnnotationFS originFs = selectByAddr(aJCas, selection.getOrigin());
AnnotationFS targetFs = selectByAddr(aJCas, selection.getTarget());
int addr = aAdapter.addArc(state.getDocument(), state.getUser().getUsername(), aJCas,
originFs, targetFs);
selection.selectArc(new VID(addr), originFs, targetFs);
}