DELIMITER_DOT, DELIMITER_SPACE, DELIMITER_SEMICOLON -> {
        throw IOException("unexpected delimiter")
      }
    }

    // "002F" or "0000..002C"
    val sourceCodePoint0 = readHexadecimalUnsignedLong()
    val sourceCodePoint1 =
      when (select(optionsDot)) {
        DELIMITER_DOT -> {
          if (readByte() != '.'.code.toByte()) throw IOException("expected '..'")
          readHexadecimalUnsignedLong()
        }

    }

    private static boolean refExists(String ref) throws IOException, InterruptedException {
        ExecResult r = exec("git", "rev-parse", "--verify", ref);
        return r.exitCode == 0;
    }

    private static void run(String... cmd) throws IOException, InterruptedException {
        ExecResult r = exec(cmd);
        if (r.exitCode != 0) {

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * 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 com.google.common.annotations.VisibleForTesting;

import org.elasticsearch.gradle.VersionProperties;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;

/**

  @Override
  public InputStream openStream() throws IOException {
    inputStreamOpened = true;
    return new RandomAmountInputStream(new In(), new Random());
  }

  private final class In extends TestInputStream {

    In() throws IOException {
      super(new ByteArrayInputStream(bytes), options);
    }

    @Override
    public void close() throws IOException {
      inputStreamClosed = true;
      super.close();

    super(checkNotNull(out));
    this.hasher = checkNotNull(hashFunction.newHasher());
  }

  @Override
  public void write(int b) throws IOException {
    hasher.putByte((byte) b);
    out.write(b);
  }

  @Override
  public void write(byte[] bytes, int off, int len) throws IOException {
    hasher.putBytes(bytes, off, len);
    out.write(bytes, off, len);
  }

  /**

     */
    public static void main(String[] args) throws IOException {
        int exitCode = new MavenCling().run(args, null, null, null, false);
        System.exit(exitCode);
    }

    /**
     * ClassWorld Launcher "enhanced" entry point: returning exitCode and accepts Class World.
     */
    public static int main(String[] args, ClassWorld world) throws IOException {

        super.tearDown(testInfo);
    }

    private void deleteRecursive(final Path path) throws IOException {
        if (Files.isDirectory(path)) {
            Files.list(path).forEach(child -> {
                try {
                    deleteRecursive(child);
                } catch (final IOException e) {
                    // ignore
                }
            });
        }
        Files.deleteIfExists(path);

          throw new IOException();
        }

        @Override
        public Appendable append(@Nullable CharSequence csq, int start, int end)
            throws IOException {
          throw new IOException();
        }

        @Override
        public Appendable append(char c) throws IOException {
          throw new IOException();
        }

      call: Call,
      ioe: IOException,
    ) {
      for (delegate in eventListeners) {
        delegate.responseFailed(call, ioe)
      }
    }

    override fun callEnd(call: Call) {
      for (delegate in eventListeners) {
        delegate.callEnd(call)
      }
    }

    override fun callFailed(
      call: Call,
      ioe: IOException,
    ) {