-import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-import static org.mockito.Mockito.doNothing;
-import static org.mockito.Mockito.doReturn;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.verifyNoMoreInteractions;
-import static org.opendaylight.controller.netconf.util.test.XmlUnitUtil.assertContainsElement;
-import static org.opendaylight.controller.netconf.util.test.XmlUnitUtil.assertContainsElementWithText;
-import static org.opendaylight.controller.netconf.util.xml.XmlUtil.readXmlToElement;
-
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.math.BigInteger;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-import javax.management.InstanceAlreadyExistsException;
-import javax.management.InstanceNotFoundException;
-import javax.management.ObjectName;
-import javax.xml.parsers.ParserConfigurationException;
-
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;