* Existing usages of Serializer outside of this infrastructure should be migrated to use it.
* Existing usages of Java serialization should be migrated to use it.
* It is ok for Serializer to be used as a replacement for Java serialization as a migration step.

    ListenableFuture<@Nullable Void> unused =
        serializer.submitAsync(() -> settableFuture, directExecutor());
    for (int i = 0; i < 25_000; i++) {
      serializer.submit(Callables.<Void>returning(null), directExecutor()).cancel(true);
      unused = serializer.submit(Callables.returning(null), directExecutor());
    }
    ListenableFuture<Integer> stackDepthCheck =

    ListenableFuture<@Nullable Void> unused =
        serializer.submitAsync(() -> settableFuture, directExecutor());
    for (int i = 0; i < 25_000; i++) {
      serializer.submit(Callables.<Void>returning(null), directExecutor()).cancel(true);
      unused = serializer.submit(Callables.returning(null), directExecutor());
    }
    ListenableFuture<Integer> stackDepthCheck =

import org.codelibs.fess.crawler.exception.ChildUrlsException;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.codelibs.fess.crawler.exception.CrawlingAccessException;
import org.codelibs.fess.crawler.serializer.DataSerializer;
import org.codelibs.fess.crawler.transformer.impl.XpathTransformer;
import org.codelibs.fess.crawler.util.CrawlingParameterUtil;
import org.codelibs.fess.crawler.util.FieldConfigs;

            raise ResponseValidationError(
                errors=errors,
                body=response_content,
                endpoint_ctx=ctx,
            )
        serializer = field.serialize_json if dump_json else field.serialize
        return serializer(
            value,
            include=include,
            exclude=exclude,
            by_alias=by_alias,
            exclude_unset=exclude_unset,

# common

# Default script for the crawler (e.g., groovy).
crawler.default.script=groovy
# Number of threads for HTTP crawling.
crawler.http.thread_pool.size=0
# Serializer type for crawler data (e.g., kryo).
crawler.data.serializer=kryo
# Maximum length of site name in documents.
crawler.document.max.site.length=100
# Encoding for site names in documents.
crawler.document.site.encoding=UTF-8

K8s.io/api: REST API types no longer implement marker `ProtoMessage()` methods, identifying them as standard v1 proto messages. Protobuf serialization of Kubernetes API types should use [k8s.io/apimachinery/pkg/runtime/serializer/protobuf](https://pkg.go.dev/k8s.io/apimachinery/pkg/runtime/serializer/protobuf). See [KEP-5589](https://github.com/kubernetes/enhancements/tree/master/keps/sig-api-machinery/5589-gogo-dependency) for more details. ([#137084](https://github.com/kubernetes/kubernetes/pull/137084),...

        assertEquals("index.field.favorite_count", FessConfig.INDEX_FIELD_favorite_count);

        assertNotNull(FessConfig.CRAWLER_DATA_SERIALIZER);
        assertEquals("crawler.data.serializer", FessConfig.CRAWLER_DATA_SERIALIZER);
    }

    // Test the get method directly
    @Test
    public void test_getMethod() {
        assertEquals("Fess", fessConfig.get(FessConfig.DOMAIN_TITLE));

import org.codelibs.fess.crawler.processor.impl.DefaultResponseProcessor;
import org.codelibs.fess.crawler.rule.Rule;
import org.codelibs.fess.crawler.rule.RuleManager;
import org.codelibs.fess.crawler.serializer.DataSerializer;
import org.codelibs.fess.crawler.transformer.Transformer;
import org.codelibs.fess.crawler.util.TextUtil;
import org.codelibs.fess.mylasta.direction.FessConfig;

import org.codelibs.fess.crawler.entity.ResponseData;
import org.codelibs.fess.crawler.entity.ResultData;
import org.codelibs.fess.crawler.exception.ChildUrlsException;
import org.codelibs.fess.crawler.serializer.DataSerializer;
import org.codelibs.fess.crawler.util.FieldConfigs;
import org.codelibs.fess.helper.CrawlingConfigHelper;
import org.codelibs.fess.helper.CrawlingInfoHelper;
import org.codelibs.fess.helper.DocumentHelper;