import jalview.datamodel.Alignment;
import jalview.datamodel.AlignmentView;
import jalview.datamodel.SequenceGroup;
import jalview.datamodel.SequenceI;
import jalview.jbgui.GPairwiseAlignPanel;
import jalview.util.MessageManager;
import jalview.datamodel.Alignment;
import jalview.datamodel.AlignmentView;
import jalview.datamodel.SequenceGroup;
import jalview.datamodel.SequenceI;
import jalview.jbgui.GPairwiseAlignPanel;
import jalview.util.MessageManager;
SequenceGroup selectionGroup = viewport.getSelectionGroup();
boolean isSelection = selectionGroup != null
SequenceGroup selectionGroup = viewport.getSelectionGroup();
boolean isSelection = selectionGroup != null