* canceled, even if this plan is canceled.
     */
    fun retry(): Plan?
  }

  /**
   * What to do once a plan has executed.
   *
   * If [nextPlan] is not-null, another attempt should be made by following it. If [throwable] is
   * non-null, it should be reported to the user should all further attempts fail.
   *

```java
OkHttpClient client = new OkHttpClient();

String run(String url) throws IOException {
  Request request = new Request.Builder()
      .url(url)
      .build();

  try (Response response = client.newCall(request).execute()) {
    return response.body().string();
  }
}
```


Post to a Server
----------------

This program posts data to a service. [Full source][post_example].

```java

import java.io.File;
import java.util.Collections;
import java.util.List;
import java.util.Properties;
import java.util.Set;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.project.MavenProject;
import org.junit.jupiter.api.Test;

import static org.codehaus.plexus.testing.PlexusExtension.getBasedir;
import static org.hamcrest.MatcherAssert.assertThat;

                    return resolver.resolve(i, classMetaData)
                }
            })
            classMetaData.visitTypes(new Action<gradlebuild.docs.dsl.source.model.TypeMetaData>() {
                void execute(gradlebuild.docs.dsl.source.model.TypeMetaData t) {
                    resolver.resolve(t, classMetaData)
                }
            })
        } catch (Exception e) {

      Request.Builder()
        .header("Authorization", "Client-ID $IMGUR_CLIENT_ID")
        .url("https://api.imgur.com/3/image")
        .post(requestBody)
        .build()

    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")

      println(response.body.string())
    }
  }

  companion object {
    /**

${project.name}

 ${project.description}

* Useful entry points

 * {{{./apidocs/org/apache/maven/cli/MavenCli.html}MavenCli.doMain(CliRequest)}} is the main method preparing runtime environment before running {{{../maven-core/}Maven.execute()}}

* References

 * {{{./cli.html}CLI options}},

 * {{{./logging.html}logging API}}.

 * since 3.3.1 (see {{{/docs/3.3.1/release-notes.html#Core_Extensions}3.3.1 release notes}} for more details),

* Any program, any code, **can only do things** when it is being **executed**. So, when there's a **process running**.
* The process can be **terminated** (or "killed") by you, or by the operating system. At that point, it stops running/being executed, and it can **no longer do things**.

    private QueryCommand queryCommand;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        queryCommand = new QueryCommand() {
            @Override
            public QueryBuilder execute(QueryContext context, Query query, float boost) {
                return null;
            }

            @Override
            protected String getQueryClassName() {
                return null;
            }

  url: String,
) {
  System.out.printf("%-40s ", url)
  System.out.flush()
  println(Platform.get())
  val request =
    Request.Builder()
      .url(url)
      .build()
  try {
    client.newCall(request).execute().use { response ->
      val handshake = response.handshake
      println(
        "${handshake!!.tlsVersion} ${handshake.cipherSuite} ${response.protocol} " +
          "${response.code} ${response.body.bytes().size}b",

# under the License.

name: Can Maven build itself

on: [push, pull_request]

# clear all permissions for GITHUB_TOKEN
permissions: {}

jobs:
  build:

    # execute on any push or pull request from forked repo
    if: github.event_name == 'push' || ( github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork )

    strategy:
      matrix: