-import static org.junit.Assert.assertEquals;
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.doNothing;
-import static org.mockito.Mockito.doReturn;
-import static org.mockito.Mockito.mock;
-
-import java.io.Closeable;
-import java.lang.management.ManagementFactory;
-import java.util.Dictionary;
-import java.util.Set;
-
-import javax.management.InstanceAlreadyExistsException;
-import javax.management.MBeanServer;
-import javax.management.ObjectName;
-