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
}
    /** (non-Javadoc)
     * Method declared on IPreferencePage.
     */
    public void setContainer(IPreferencePageContainer container) {
        this.container = container;
    }
    /**
     * The <code>PreferencePage</code> implementation of this method 
     * declared on <code>DialogPage</code> updates the container.
     */
    public void setErrorMessage(String newMessage) {
        super.setErrorMessage(newMessage);
        if(messageArea == null){
        	if (getContainer() != null) 
        		getContainer().updateMessage();
        }
        else 
        	messageArea.updateText(
					PreferenceDialog.getShortenedString(
							newMessage,messageArea.messageText),IMessageProvider.ERROR);
    }
    /**
     * The <code>PreferencePage</code> implementation of this method 
     * declared on <code>DialogPage</code> updates the container.
     */
    public void setMessage(String newMessage, int newType) {
        super.setMessage(newMessage, newType);
        if(messageArea == null){
        	if (getContainer() != null)