import org.gradle.internal.serialize.Encoder;
import org.gradle.internal.serialize.Serializer;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

public class FilteringClassLoaderSpecSerializer implements Serializer<FilteringClassLoader.Spec> {
    @Override
    public void write(Encoder encoder, FilteringClassLoader.Spec spec) throws Exception {
        encodeStrings(encoder, spec.getClassNames());

    private static final byte FILTERING_SPEC = (byte) 0;
    private static final byte VISITABLE_URL_CLASSLOADER_SPEC = (byte) 1;

    private final FilteringClassLoaderSpecSerializer filteringClassLoaderSpecSerializer = new FilteringClassLoaderSpecSerializer();
    private final VisitableURLClassLoaderSpecSerializer visitableURLClassLoaderSpecSerializer = new VisitableURLClassLoaderSpecSerializer();

    @Override

import org.gradle.internal.serialize.kryo.KryoBackedEncoder
import spock.lang.Specification

class FilteringClassLoaderSpecSerializerTest extends Specification {
    def serializer = new FilteringClassLoaderSpecSerializer()
    def outputStream = new ByteArrayOutputStream()
    def encoder = new KryoBackedEncoder(outputStream)

    def "can serialize and deserialize a spec"() {

Class <org.gradle.workers.internal.FilteringClassLoaderSpecSerializer> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (FilteringClassLoaderSpecSerializer.java:0)