@Override
        public boolean canConvert(Class<?> type) {
            return XmlNode.class.equals(type);
        }

        @Override
        public Object fromConfiguration(
                final ConverterLookup lookup,
                final PlexusConfiguration configuration,
                final Class<?> type,
                final Class<?> enclosingType,

            String classifier,
            List<ArtifactRepository> remoteRepositories,
            String downloadUrl,
            List<String> path) {
        super(
                constructMissingArtifactMessage(
                        message, "", groupId, artifactId, version, type, classifier, downloadUrl, path),
                groupId,
                artifactId,
                version,
                type,

   | way you don't have to hardcode paths in your pom.xml.
   |
   | Every toolchain consist of 3 elements:
   | * type: the type of tool. An often used value is 'jdk'. Toolchains-aware
   |   plugins should document which type you must use.
   |
   | * provides: A list of key/value-pairs.
   |   Based on the toolchain-configuration in the pom.xml Maven will search for

      <groupId>maven-test</groupId>
      <artifactId>maven-test-b</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>maven-test-z</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
  </dependencies>

      <groupId>maven-test</groupId>
      <artifactId>t05-c</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t05-d</artifactId>
      <version>1.1</version>
      <type>jar</type>
      <scope>compile</scope>
      <optional>false</optional>
    </dependency>
  </dependencies>

      <groupId>maven-test</groupId>
      <artifactId>t06-c</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t06-d</artifactId>
      <version>1.1</version>
      <type>jar</type>
      <scope>compile</scope>
      <optional>false</optional>
    </dependency>
  </dependencies>

        return dependency.getArtifact().getExtension();
    }

    @Override
    public Type getType() {
        String type = dependency
                .getArtifact()
                .getProperty(ArtifactProperties.TYPE, dependency.getArtifact().getExtension());
        return session.requireType(type);
    }

    @Nonnull
    @Override
    public DependencyScope getScope() {

    private final Artifact parent;

    public AttachedArtifact(Artifact parent, String type, String classifier, ArtifactHandler artifactHandler) {
        super(
                parent.getGroupId(),
                parent.getArtifactId(),
                parent.getVersionRange(),
                parent.getScope(),
                type,
                classifier,
                artifactHandler,
                parent.isOptional());

     * @param project project reference.
     * @param artifactType artifact type.
     * @param artifactFile artifact file.
     */
    void attachArtifact(MavenProject project, String artifactType, File artifactFile);

    /**
     * Add or replace an artifact to the current project.
     * @param project the project reference.
     * @param artifactType the type (e.g. jar) or null.
     * @param artifactClassifier the classifier or null.

 */
package org.apache.maven.internal.impl.resolver.type;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.apache.maven.api.JavaPathType;
import org.apache.maven.api.Language;
import org.apache.maven.api.PathType;
import org.apache.maven.api.Type;