import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
-import org.eclipse.jdt.annotation.NonNullByDefault;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.osgi.util.NLS;
import org.eclipse.tracecompass.internal.tmf.core.Activator;
*
* @author Patrick Tasse
*/
-@NonNullByDefault
public abstract class CallStackStateProvider extends AbstractTmfStateProvider {
/**