import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
-import org.eclipse.tracecompass.internal.lttng2.ust.core.trace.callstack.LttngUstCallStackProvider;
+import org.eclipse.tracecompass.internal.lttng2.ust.core.callstack.LttngUstCallStackProvider;
import org.eclipse.tracecompass.lttng2.ust.core.trace.LttngUstTrace;
import org.eclipse.tracecompass.tmf.core.exceptions.TmfAnalysisException;
import org.eclipse.tracecompass.tmf.core.statesystem.ITmfStateProvider;