private void addCheckBox(Composite parent, String label, String key, int indentation) {
private Button addCheckBox(Composite parent, String label, String key, int indentation) {
	private void addCheckBox(Composite parent, String label, String key, int indentation) {				Button checkBox= new Button(parent, SWT.CHECK);		checkBox.setText(label);				GridData gd= new GridData(GridData.FILL_HORIZONTAL);		gd.horizontalIndent= indentation;		gd.horizontalSpan= 2;		checkBox.setLayoutData(gd);		checkBox.addSelectionListener(fCheckBoxListener);				fCheckBoxes.put(checkBox, key);	}