*         {@link ProjectBuildingException}.
     */
    MavenProject getProject();

    /**
     * Gets the problems that were encountered during the project building.
     *
     * @return The problems that were encountered during the project building, can be empty but never {@code null}.
     */
    List<ModelProblem> getProblems();

    /**

    String CHILDREN_COMBINATION_MERGE = "merge";

    String CHILDREN_COMBINATION_APPEND = "append";

    /**
     * This default mode for combining children DOMs during merge means that where element names match, the process will
     * try to merge the element data, rather than putting the dominant and recessive elements (which share the same
     * element name) as siblings in the resulting DOM.

 * under the License.
 */
package org.apache.maven.api.services.xml;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.services.MavenException;

/**
 * An exception thrown during the reading of an xml file.
 *
 * @since 4.0.0
 */
@Experimental
public class XmlReaderException extends MavenException {

    private final Location location;

    /**

    <version>0.1</version>
  </parent>

  <artifactId>child</artifactId>

  <name>Maven Integration Test :: MNG-3938</name>
  <description>
    Test that plugin executions with the same id are merged during inheritance, especially executions using the
    default id, regardless whether the id is given explicitly by the user or implicitly assumed from defaults.
  </description>

  <build>
    <plugins>
      <plugin>

 */
package org.apache.maven.api;

import java.util.Optional;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Event sent by maven during various phases of the build process.
 * Such events can be listened to using {@link Listener}s objects
 * registered in the {@link Session}.
 *
 * @since 4.0.0
 */
@Experimental
public interface Event {

import org.apache.maven.api.services.model.ModelUrlNormalizer;
import org.apache.maven.api.services.model.UrlNormalizer;

/**
 * Normalizes URLs to remove the ugly parent references "../" that got potentially inserted by URL adjustment during
 * model inheritance.
 *
 */
@Named
@Singleton
public class DefaultModelUrlNormalizer implements ModelUrlNormalizer {

    private final UrlNormalizer urlNormalizer;

    @Inject

/**
 * Instances of this interface retrieve and store data for the --resume / -r feature. This data is used to ensure newer
 * builds of the same project, that have the -r command-line flag, skip successfully built projects during earlier
 * invocations of Maven.
 */
public interface BuildResumptionDataRepository {
    /**
     * Persists any data needed to resume the build at a later point in time, using a new Maven invocation. This method

 * under the License.
 */
package org.apache.maven.api.plugin;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.services.MavenException;

/**
 * An exception occurring during the execution of a plugin.
 *
 * @since 4.0.0
 */
@Experimental
public class MojoException extends MavenException {

    protected Object source;

    protected String longMessage;

    /**

  <artifactId>parent</artifactId>
  <version>0.1</version>
  <packaging>pom</packaging>

  <name>Maven Integration Test :: MNG-4415</name>
  <description>
    Test that merging of plugins during inheritance follows these rules regarding ordering:
     parent: X ->      A -> B ->      D -> E
     child:       Y -> A ->      C -> D ->      F
     result: X -> Y -> A -> B -> C -> D -> E -> F
  </description>

  <groupId>org.apache.maven.its.mng4415</groupId>
  <artifactId>test</artifactId>
  <version>0.1</version>

  <name>Maven Integration Test :: MNG-4415</name>
  <description>
    Test that merging of plugins during inheritance follows these rules regarding ordering:
     parent: X ->      A -> B ->      D -> E
     child:       Y -> A ->      C -> D ->      F
     result: X -> Y -> A -> B -> C -> D -> E -> F
  </description>