Read more in the <<kotlin_dsl.adoc#kotlin_dsl,Gradle Kotlin DSL Primer>>.

If you run to trouble or a suspected bug, please take advantage of the `gradle/gradle` link:{gradle-issues}[issue tracker].

                    logger.debug("Delete {}", dir);
                }
                return true;
            }
            return false;
        }

    }

    public void migrate() {
        new Thread(() -> {
            final Path basePath = baseDir.toPath();
            final String suffix = "." + imageExtention;
            try (Stream<Path> paths = Files.walk(basePath)) {

To migrate a multi-module Maven build, simply follow these steps:

 1. Create a settings script that matches the `<modules>` block of the root POM.
+
For example, this `<modules>` block:
+
[source,xml]
----
<modules>
    <module>simple-weather</module>
    <module>simple-webapp</module>
</modules>
----
+
can be migrated by adding the following line to the settings script:

}

// newCmdConfigMigrate returns cobra.Command for "kubeadm config migrate" command
func newCmdConfigMigrate(out io.Writer) *cobra.Command {
	var oldCfgPath, newCfgPath string
	var allowExperimental bool

	cmd := &cobra.Command{
		Use:   "migrate",

    echo "!!! CheckSum for the CoreDNS migration tool did not match !!!" >&2
    exit 1
  fi

  chmod +x "${download_dir}/corefile-tool-${host_arch}"

  # Migrate the CoreDNS ConfigMap depending on whether it is being downgraded or upgraded.
  "${KUBE_ROOT}/cluster/kubectl.sh" -n kube-system get cm coredns -o jsonpath='{.data.Corefile}' > "${download_dir}/Corefile-old"

     * during metadata retrieval.
     */
    int VALIDATION_LEVEL_MINIMAL = 0;

    /**
     * Denotes validation as performed by Maven 2.0. This validation level is meant as a compatibility mode to allow
     * users to migrate their projects.
     */
    int VALIDATION_LEVEL_MAVEN_2_0 = 20;

    /**
     * Denotes validation as performed by Maven 3.0. This validation level is meant for existing projects.
     */

import okio.ByteString.Companion.decodeHex
import okio.Closeable
import okio.FileNotFoundException
import okio.FileSystem
import okio.IOException
import okio.Options
import okio.Path
import okio.use

// TODO: migrate callers to [Regex.matchAt] when that API is not experimental.
internal fun Regex.matchAtPolyfill(
  input: CharSequence,
  index: Int,
): MatchResult? {
  val candidate = find(input, index) ?: return null

// limitations under the License.

[[upgrading_version_6]]
= Upgrading your build from Gradle 6.x to 7.0

This chapter provides the information you need to migrate your Gradle 6.x builds to Gradle 7.0.
For migrating from Gradle 5.x or earlier, complete the <<upgrading_version_5.adoc#upgrading_version_5, older migration guide>> first.

We recommend the following steps for all users:

/**
 * An immutable set of directory trees. Intended to be use to efficiently determine whether a particular file is contained in a set of directories or not.
 */
// TODO Make this into an interface once we can migrate to Java 8+.
public abstract class FileHierarchySet {
    /**
     * Checks if the given file is contained in the set.
     *
     * A file is contained in the set if it or one of its ancestors has

 *
 * Pinning certificates limits your server team's abilities to update their TLS certificates. By
 * pinning certificates, you take on additional operational complexity and limit your ability to
 * migrate between certificate authorities. Do not use certificate pinning without the blessing of
 * your server's TLS administrator!
 *
 * ### Note about self-signed certificates
 *