In constructor for class derived from SectionPart {
  create table viewer with appropriate columns
  tableViewer.setContentProvider(new ArrayContentProvider());
}

@Override
public refresh() {
  tableViewer.setInput(myModel.getContacts());
  tableViewer.refresh();
}

private editRecord() {
  display dialog box for editing
  if(user pressed OK) {
    updateMyModel();
    this.markDirty();
    this.refresh();
  }
}