But if you need to access variables and objects from the same **FastAPI** app, or you need to perform small background tasks (like sending an email notification), you can simply just use `BackgroundTasks`.

## Recap { #recap }

import org.apache.maven.execution.scope.internal.MojoExecutionScopeModule;
import org.apache.maven.internal.impl.DefaultLog;
import org.apache.maven.internal.impl.DefaultMojoExecution;
import org.apache.maven.internal.impl.InternalMavenSession;
import org.apache.maven.internal.impl.SisuDiBridgeModule;
import org.apache.maven.internal.xml.XmlPlexusConfiguration;
import org.apache.maven.model.Plugin;

 */
package org.codelibs.fess.crawler.entity;

import java.io.IOException;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.fess.crawler.service.impl.OpenSearchDataService;
import org.lastaflute.di.core.SingletonLaContainer;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;

/**

 * <p>
 * <strong>Note:</strong> This class is part of work in progress and can be changed or removed without notice.
 * @since 3.2.4
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")
public class ArtifactDescriptorReaderDelegate {
    public void populateResult(RepositorySystemSession session, ArtifactDescriptorResult result, Model model) {

import org.apache.maven.api.settings.ActivationProperty;
import org.apache.maven.api.settings.Profile;
import org.apache.maven.api.settings.Repository;
import org.apache.maven.api.settings.Settings;
import org.apache.maven.impl.SettingsUtilsV4;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;

class SettingsUtilsTest {

    @Test

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.helper.impl;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;

import org.apache.tika.metadata.Metadata;

      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-util</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-impl</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-connector-basic</artifactId>
    </dependency>
    <dependency>

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.service.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

import org.apache.maven.settings.building.SettingsProblem.Severity;
import org.apache.maven.settings.building.SettingsProblemCollector;

/**
 * @deprecated since 4.0.0, use {@code org.apache.maven.impl.DefaultSettingsValidator} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultSettingsValidator implements SettingsValidator {

    private static final String ID = "[\\w.-]+";

import org.apache.maven.execution.scope.internal.MojoExecutionScopeModule;
import org.apache.maven.extension.internal.CoreExports;
import org.apache.maven.extension.internal.CoreExtensionEntry;
import org.apache.maven.internal.impl.DefaultLookup;
import org.apache.maven.session.scope.internal.SessionScope;
import org.apache.maven.session.scope.internal.SessionScopeModule;
import org.codehaus.plexus.ContainerConfiguration;