import java.io.ObjectInputStream;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Map;
import java.util.function.BinaryOperator;
import java.util.function.Function;
import java.util.stream.Collector;
import java.util.stream.Collectors;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**

import java.util.function.Function;
import java.util.function.Supplier;
import java.util.function.UnaryOperator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;

import org.apache.maven.api.model.Activation;
import org.apache.maven.api.model.ActivationFile;
import org.apache.maven.api.model.ActivationOS;

import java.util.ServiceLoader;
import java.util.Set;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Stream;

import com.google.inject.AbstractModule;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.ParseException;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.function.BiPredicate;
import java.util.stream.Collector;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tester for {@code Collector} implementations.
 *
 * <p>Example usage:
 *
 * <pre>

        Set<FileModelSource> sources = mappedSources.get(groupId != null ? groupId + ":" + artifactId : artifactId);
        if (sources == null) {
            return null;
        }
        return sources.stream()
                .reduce((a, b) -> {
                    throw new IllegalStateException(String.format(
                            "No unique Source for %s:%s: %s and %s",

Pick the relevant commit-id say for example commit-id from the master branch

```
commit 4f3317effea38c203c358af9cb5ce3c0e4173976
Author: Klaus Post <******@****.***>
Date:   Mon Nov 8 08:41:27 2021 -0800

    Close stream on panic (#13605)

    Always close streamHTTPResponse on panic on main thread to avoid
    write/flush after response handler has returned.
```

```
λ git cherry-pick 4f3317effea38c203c358af9cb5ce3c0e4173976
```

	lrw.headerBytesWritten += n
	for k, v := range headers {
		n, _ := fmt.Fprintf(w, "%s: %s\n", k, v[0])
		lrw.headerBytesWritten += n
	}
}

// blobBody returns a dummy body placeholder for blob (binary stream)
var blobBody = []byte("<BLOB>")

// gzippedBody returns a dummy body placeholder for gzipped content
var gzippedBody = []byte("<GZIP>")

// Body - Return response body.

	StatVol(ctx context.Context, volume string) (vol VolInfo, err error)
	DeleteVol(ctx context.Context, volume string, forceDelete bool) (err error)

	// WalkDir will walk a directory on disk and return a metacache stream on wr.
	WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writer) error

	// Metadata operations
	DeleteVersion(ctx context.Context, volume, path string, fi FileInfo, forceDelMarker bool, opts DeleteOptions) error

		c.outgoing.Delete(client.MuxID)
	}()
	return client.traceRoundtrip(ctx, c.trace, h, req)
}

// NewStream creates a new stream.
// Initial payload can be reused by the caller.
func (c *Connection) NewStream(ctx context.Context, h HandlerID, payload []byte) (st *Stream, err error) {
	if !h.valid() {
		return nil, ErrUnknownHandler
	}
	if c.State() != StateConnected {
		return nil, ErrDisconnected
	}

      Request.Builder()
        .url(server.url("/"))
        .build()
    val response = client.newCall(request).execute()
    assertThat(response.code).isEqualTo(expectedResponseCode)

    // Exhaust the content stream.
    response.body.string()
    val cached = cacheGet(cache, request)
    if (shouldWriteToCache) {
      assertThat(cached).isNotNull()
      cached!!.body.close()
    } else {