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
*/
    public IPreferencePageContainer getContainer() {
        return container;
    }
    /**
     * Returns the preference store of this preference page.
     *
     * @return the preference store , or <code>null</code> if none
     */
    public IPreferenceStore getPreferenceStore() {
        if (preferenceStore == null)
            preferenceStore = doGetPreferenceStore();
        if (preferenceStore != null)
            return preferenceStore;
        else if (container != null)
            return container.getPreferenceStore();
        return null;
    }
    /**	
     * The preference page implementation of an <code>IPreferencePage</code>
     * method returns whether this preference page is valid. Preference
     * pages are considered valid by default; call <code>setValid(false)</code>
     * to make a page invalid.
     */
    public boolean isValid() {
        return isValid;
    }
    /**
     * Suppresses creation of the standard Default and Apply buttons
     * for this page.