Please arrange imports like this:

import com.squareup.wire.protos.person.Person;
import com.squareup.wire.protos.person.Person.PhoneNumber;
import com.squareup.wire.protos.person.Person.PhoneType;
import com.squareup.wire.protos.simple.Ext_simple_message;
import com.squareup.wire.protos.simple.ExternalMessage;
import com.squareup.wire.protos.simple.SimpleMessage;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;

import static com.squareup.wire.protos.simple.Ext_simple_message.barext;
import static com.squareup.wire.protos.simple.Ext_simple_message.bazext;
import static com.squareup.wire.protos.simple.Ext_simple_message.fooext;
import static com.squareup.wire.protos.simple.Ext_simple_message.nested_message_ext;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;