import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
-import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceType;
+import org.eclipse.linuxtools.tmf.core.project.model.TmfTraceType;
/**
* A helper class to show the trace types and files and names. it contains the