* Execution model
* Metadata model
* Metadata tooling
 ** Metadata extractor
 ** Metadata reader
 ** Metadata writer
 ** Metadata adapter (if required for the target system)
* Maven packaging and lifecycle
* Maven test harness for plugin execution model
* Eclipse IDE tooling for plugin execution model and metadata model

- we also seem to have information like the plugin lifecycle model that's buried inside the maven execution model

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.ArtifactRepositoryFactory;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.LegacySupport;
import org.apache.maven.repository.MirrorSelector;
import org.apache.maven.settings.Mirror;
import org.apache.maven.settings.Proxy;

import org.apache.maven.classrealm.ClassRealmManager;
import org.apache.maven.di.Injector;
import org.apache.maven.di.Key;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.execution.scope.internal.MojoExecutionScope;
import org.apache.maven.execution.scope.internal.MojoExecutionScopeModule;
import org.apache.maven.internal.impl.DefaultLog;
import org.apache.maven.internal.impl.DefaultMojoExecution;

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

import javax.inject.Named;
import javax.inject.Singleton;

import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;

labels.crawling_info_CrawlerExecTime=Crawler Execution Time
labels.crawling_info_CrawlerStatus=Crawler Status
labels.crawling_info_WebFsCrawlExecTime=Crawl Execution Time (Web/File)
labels.crawling_info_WebFsCrawlStartTime=Crawl Start Time (Web/File)
labels.crawling_info_WebFsCrawlEndTime=Crawl End Time (Web/File)
labels.crawling_info_WebFsIndexExecTime=Indexing Execution Time (Web/File)

#
# Changes the behavior in pycpp.sh from "run all tests" to "verify that all
# tests can compile." Used in some CI jobs (macOS and Linux Arm64) where test
# execution is too expensive.
TFCI_PYCPP_SWAP_TO_BUILD_ENABLE=1

import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Repository;
import org.apache.maven.model.building.ModelBuildingException;
import org.apache.maven.model.building.ModelBuildingRequest;

            writer.accept("Build plan will be lazily computed");
        } else {
            plan.steps(project)
                    .filter(step ->
                            step.phase != null && step.executions().findAny().isPresent())
                    .sorted(Comparator.comparingInt(plan.sortedNodes()::indexOf))
                    .forEach(step -> {

# Exceptions - `HTTPException` and `WebSocketException`

These are the exceptions that you can raise to show errors to the client.

When you raise an exception, as would happen with normal Python, the rest of the execution is aborted. This way you can raise these exceptions from anywhere in the code to abort a request and show the error to the client.

You can use:

* `HTTPException`
* `WebSocketException`

import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.execution.DefaultMavenExecutionRequest;
import org.apache.maven.execution.DefaultMavenExecutionResult;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.internal.impl.DefaultLookup;
import org.apache.maven.internal.impl.DefaultSessionFactory;