Bug 124569 [projection] expose projection model updater on JavaEditor
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
JavaSourceViewer javaSourceViewer= null;
		if (sourceViewer instanceof JavaSourceViewer)
			javaSourceViewer= (JavaSourceViewer)sourceViewer;
		
		IPreferenceStore store= getPreferenceStore();
		if (javaSourceViewer != null && isFoldingEnabled() &&(store == null || !store.getBoolean(PreferenceConstants.EDITOR_SHOW_SEGMENTS)))
			javaSourceViewer.prepareDelayedProjection();
		
		super.doSetInput(input);
		if (javaSourceViewer != null && javaSourceViewer.getReconciler() == null) {
			IReconciler reconciler= getSourceViewerConfiguration().getReconciler(javaSourceViewer);
			if (reconciler != null) {
				reconciler.install(javaSourceViewer);
				javaSourceViewer.setReconciler(reconciler);
			}
		}
		if (fEncodingSupport != null)
			fEncodingSupport.reset();
		setOutlinePageInput(fOutlinePage, input);
		if (isShowingOverrideIndicators())
			installOverrideIndicator(false);
	}
	/*
	 * @see org.eclipse.ui.texteditor.AbstractTextEditor#setPreferenceStore(org.eclipse.jface.preference.IPreferenceStore)
	 * @since 3.0
	 */
	protected void setPreferenceStore(IPreferenceStore store) {
		super.setPreferenceStore(store);
		if (getSourceViewerConfiguration() instanceof JavaSourceViewerConfiguration) {
			JavaTextTools textTools= JavaPlugin.getDefault().getJavaTextTools();