Bug 124569 [projection] expose projection model updater on JavaEditor
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
protected IStatusLineManager getStatusLineManager() {
		IEditorActionBarContributor contributor= getEditorSite().getActionBarContributor();
		if (contributor instanceof EditorActionBarContributor) {
			return ((EditorActionBarContributor) contributor).getActionBars().getStatusLineManager();
		}
		return null;
	}
	/*
	 * @see AbstractTextEditor#getAdapter(Class)
	 */
	public Object getAdapter(Class required) {
		if (IContentOutlinePage.class.equals(required)) {
			if (fOutlinePage == null)
				fOutlinePage= createOutlinePage();
			return fOutlinePage;
		}
		if (IEncodingSupport.class.equals(required))
			return fEncodingSupport;
		if (required == IShowInTargetList.class) {
			return new IShowInTargetList() {
				public String[] getShowInTargetIds() {
					return new String[] { JavaUI.ID_PACKAGES, IPageLayout.ID_OUTLINE, IPageLayout.ID_RES_NAV };
				}
			};
		}
		if (required == IShowInSource.class) {
			IJavaElement je= null;
			try {
				je= SelectionConverter.getElementAtOffset(this);
			} catch (JavaModelException ex) {