selectClasspathContainers = toolkit.createButton(composite, Messages.editorSectionSelectClasspathContainers, SWT.CHECK);
selectClasspathContainers.setSelection(gs.isSelectClasspathContainers());
selectClasspathContainers.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
execute(new SetSelectClasspathContainersCommand(server, selectClasspathContainers.getSelection()));
createCheckbox();
//
// For any selection change the checkbox will be populated from the workspace.