Bug 93175 [Preferences] PreferencePage.createControl is tagged as experimental
build I20050426 PreferencePage.createControl in JFace still states: * <strong>NOTE:</strong> This API is experimental * and subject to change before the 3.1 release. Should remove this for M7.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
*/
    private Control body;
    /**
     * Whether this page has the standard Apply and Defaults buttons; 
     * <code>true</code> by default.
     *
     * @see #noDefaultAndApplyButton
     */
    private boolean createDefaultAndApplyButton = true;
    /**
     * Standard Defaults button, or <code>null</code> if none.
     * This button has id <code>DEFAULTS_ID</code>.
     */
    private Button defaultsButton = null;
    /**
     * The container this preference page belongs to; <code>null</code>
     * if none.
     */
    private IPreferencePageContainer container = null;
    /**
     * Standard Apply button, or <code>null</code> if none.
     * This button has id <code>APPLY_ID</code>.
     */
    private Button applyButton = null;
    /**
     * Description label.
     * 
     * @see #createDescriptionLabel(Composite)
     */
    private Label descriptionLabel;