private static IEditorInput convertFileInput(IFileEditorInput input) {
   IFileEditorInput fi = (IFileEditorInput) input;
   IFile f = fi.getFile();
   if (f != null && !f.isSynchronized(IResource.DEPTH_INFINITE)) {
     try {
       f.refreshLocal(IResource.DEPTH_INFINITE, null);
     } catch (CoreException e) {
       // ignore
     }
   }
   XModelObject o = EclipseResourceUtil.getObjectByResource(f);
   if (o == null) {
     o = EclipseResourceUtil.createObjectForResource(f);
   }
   return (o == null || o.getFileType() != XModelObject.FILE)
       ? input
       : new XModelObjectEditorInput(getMainObject(o));
 }