return registry;
    }

    private static class NullableSerializer<T> implements Serializer<T> {
        private final Serializer<T> serializer;

        private NullableSerializer(Serializer<T> serializer) {
            this.serializer = serializer;
        }

        @Override
        public T read(Decoder decoder) throws Exception {

Class <org.gradle.api.internal.tasks.testing.worker.TestEventSerializer$NullableSerializer> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (TestEventSerializer.java:0)