import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
-import org.eclipse.linuxtools.tmf.core.TmfProjectNature;
+import org.eclipse.linuxtools.internal.tmf.core.TmfProjectNature;
+import org.eclipse.linuxtools.internal.tmf.core.util.TmfTraceType;
import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
-import org.eclipse.linuxtools.tmf.core.util.TmfTraceType;
import org.eclipse.linuxtools.tmf.ui.TmfUiPlugin;
import org.eclipse.linuxtools.tmf.ui.parsers.custom.CustomTxtTrace;
import org.eclipse.linuxtools.tmf.ui.parsers.custom.CustomTxtTraceDefinition;