The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see
    https://groups.google.com/g/google-web-toolkit-contributors/c/CqYH59Dt_rQ/m/uVGW1QdUsXUJ
    for details.

    The summary is that it ignores one file in favor of the other.
    util.concurrent, like nearly all our packages, has two .gwt.xml files: one
    for prod and one for tests. However, unlike our other packages, as of this

 * under the License.
 */
package org.apache.maven.artifact.versioning;

import java.io.IOException;
import java.io.InterruptedIOException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.regex.Pattern;

import org.junit.jupiter.api.Test;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cling.invoker;

import java.nio.file.Files;
import java.nio.file.Path;
import java.util.function.Supplier;

import org.apache.maven.api.annotations.Nonnull;

import static java.util.Objects.requireNonNull;

/**

        if (data != null) {
            return data.clone();
        }
        return Files.readAllBytes(file.toPath());
    }

    @Override
    public void close() throws IOException {
        if (file != null) {
            Files.delete(file.toPath());
        }
    }

    /**
     * Returns an InputStream to read the content from the cache.

# Base64 にしたバイトを含む JSON { #json-with-bytes-as-base64 }

アプリで JSON データの受信・送信が必要だが、その中にバイナリデータを含める必要がある場合は、base64 にエンコードできます。

## Base64 とファイル { #base64-vs-files }

バイナリデータのアップロードにはまず、JSON にエンコードする代わりに [Request Files](../tutorial/request-files.md) を、バイナリデータの送信には [カスタムレスポンス - FileResponse](./custom-response.md#fileresponse--fileresponse-) を使えるか検討してください。

JSON は UTF-8 でエンコードされた文字列のみを含められるため、生のバイト列は含められません。

            }
        }

        // Add all LICENSE and NOTICE files in licenses directory
        seen.forEach((name, file) -> {
            appendFile(file, name, "NOTICE", output);
            appendFile(new File(file.getParentFile(), name + "-LICENSE.txt"), name, "LICENSE", output);
        });

        // Find any source files with "@notice" annotated license header
        for (File sourceFile : sources.getFiles()) {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cli;

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Comparator;
import java.util.List;

import org.apache.commons.cli.Option;

	TypeXHeader = 'x'

	// Type 'g' is used by the PAX format to store key-value records that
	// are relevant to all subsequent files.
	// This package only supports parsing and composing such headers,
	// but does not currently support persisting the global state across files.
	TypeXGlobalHeader = 'g'

	// Type 'S' indicates a sparse file in the GNU format.
	TypeGNUSparse = 'S'

                }
            }

            disconnectWagon(wagon);

            releaseWagon(protocol, wagon);
        }
    }

    private void cleanupTemporaryFiles(List<File> files) {
        for (File file : files) {
            // really don't care if it failed here only log warning
            if (!file.delete()) {
                logger.warn("skip failed to delete temporary file : " + file.getAbsolutePath());

        Set<String> actualSubprojects = new HashSet<>();
        try {
            if (Files.exists(parentDir) && Files.isDirectory(parentDir)) {
                try (Stream<Path> children = Files.list(parentDir)) {
                    children.filter(Files::isDirectory)
                            .filter(dir -> Files.exists(dir.resolve(POM_XML)))
                            .forEach(dir ->