func lines(a ...string) string {
	return strings.Join(a, "\n") + "\n"
}

// drain returns a single string representing the processed input tokens.
func drain(input *Input) string {
	var buf strings.Builder
	for {
		tok := input.Next()
		if tok == scanner.EOF {
			return buf.String()
		}
		if tok == '#' {
			continue
		}
		if buf.Len() > 0 {
			buf.WriteByte('.')
		}

    level = DeprecationLevel.ERROR,
  )
  fun immutable(): Boolean = immutable

  override fun toString(): String = commonToString()

  /** Builds a `Cache-Control` request header. */
  class Builder {
    internal var noCache: Boolean = false
    internal var noStore: Boolean = false
    internal var maxAgeSeconds = -1
    internal var maxStaleSeconds = -1

      return ImmutableMap.of();
    }
  }

  private static final ImmutableMap<Class<? extends Throwable>, Predicate<Throwable>> INSTANCE_OF =
      ImmutableMap.<Class<? extends Throwable>, Predicate<Throwable>>builder()
          .put(ArithmeticException.class, e -> e instanceof ArithmeticException)
          .put(
              ArrayIndexOutOfBoundsException.class,
              e -> e instanceof ArrayIndexOutOfBoundsException)

public final class Interners {
  private Interners() {}

  /**
   * Builder for {@link Interner} instances.
   *
   * @since 21.0
   */
  public static class InternerBuilder {
    private final MapMaker mapMaker = new MapMaker();
    private boolean strong = true;

    private InternerBuilder() {}

    /**
     * Instructs the {@link InternerBuilder} to build a strong interner.
     *
     * @see Interners#newStrongInterner()

      public ImmutableSet<@NonNull E> immutableCopy() {
        ImmutableSet.Builder<@NonNull E> builder =
            new ImmutableSet.Builder<@NonNull E>()
                .addAll((Iterable<@NonNull E>) set1)
                .addAll((Iterable<@NonNull E>) set2);
        return (ImmutableSet<@NonNull E>) builder.build();
      }
    };
  }

  /**

// FileParseError indicates a provided file was unable to be parsed.
type FileParseError struct{}

const FileParseString = "Some files couldn't be parsed."

func (f AnalyzerFoundIssuesError) Error() string {
	var sb strings.Builder
	sb.WriteString(fmt.Sprintf("Analyzers found issues when analyzing %s.\n", analyzeTargetAsString()))
	sb.WriteString(fmt.Sprintf("See %s for more information about causes and resolutions.", url.ConfigAnalysis))
	return sb.String()

		if derr := c.Delete(bucket); derr != nil {
			return newError(bucket, derr)
		}
		return err
	}
	defer xhttp.DrainBody(resp.Body)

	if resp.StatusCode != http.StatusOK {
		var errorStringBuilder strings.Builder
		io.Copy(&errorStringBuilder, io.LimitReader(resp.Body, resp.ContentLength))
		errorString := errorStringBuilder.String()
		if resp.StatusCode == http.StatusConflict {

        .build()
    server.protocols = client.protocols
  }

  private fun enableTls() {
    client =
      client.newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )
        .hostnameVerifier(RecordingHostnameVerifier())
        .build()

### [Fast Fallback](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-ok-http-client/-builder/fast-fallback/)

Since version 5.0, `OkHttpClient` supports fast fallback, which is our implementation of Happy Eyeballs [RFC 6555](https://datatracker.ietf.org/doc/html/rfc6555).

 */
package org.codelibs.fess.crawler.client;

import java.util.List;
import java.util.Map;

import org.codelibs.core.lang.SystemUtil;
import org.codelibs.fess.crawler.Constants;
import org.codelibs.fess.crawler.builder.RequestDataBuilder;
import org.codelibs.fess.crawler.client.FaultTolerantClient.RequestListener;
import org.codelibs.fess.crawler.entity.RequestData;
import org.codelibs.fess.crawler.entity.ResponseData;