-import java.io.IOException;
-import java.io.StringWriter;
-import java.io.Writer;
-import java.net.URISyntaxException;
-import java.util.HashSet;
-import java.util.Iterator;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-import static org.opendaylight.yangtools.yang.data.codec.gson.TestUtils.childArray;
-import static org.opendaylight.yangtools.yang.data.codec.gson.TestUtils.childPrimitive;
-import static org.opendaylight.yangtools.yang.data.codec.gson.TestUtils.loadModules;
-import static org.opendaylight.yangtools.yang.data.codec.gson.TestUtils.resolveCont1;
-