import org.mockito.Matchers;
import org.mockito.Mock;
import org.mockito.Mockito;
-import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.opendaylight.openflowplugin.api.OFConstants;
import org.opendaylight.openflowplugin.api.openflow.device.MessageTranslator;