it.remove();
                processedPlugins.put(pluginMetadata.getGroupId(), pluginMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        return Collections.emptyList();
    }

    @Override
    public Artifact transformArtifact(Artifact artifact) {
        return artifact;
    }

    @Override

                snapshots.put(snapshotMetadata.getKey(), snapshotMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        for (Artifact artifact : artifacts) {
            if (artifact.isSnapshot()) {
                Object key = RemoteSnapshotMetadata.getKey(artifact);

 * under the License.
 */
package org.apache.maven.toolchain;

import org.apache.maven.toolchain.model.ToolchainModel;

/**
 * Internal toolchain factory, to prepare toolchains instances.
 *
 * @since 2.0.9
 */
public interface ToolchainFactory {
    /**
     * Create instance of toolchain.
     **/

        timestamp = (Date) ConfigUtils.getObject(session, new Date(), "maven.startTime");

        snapshots = new LinkedHashMap<>();
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        for (Artifact artifact : artifacts) {
            if (artifact.isSnapshot()) {
                Object key = LocalSnapshotMetadata.getKey(artifact);

 * <<<ProjectBuilder>>> component ({{{./apidocs/org/apache/maven/project/ProjectBuilder.html}javadoc}}),
 with its <<<DefaultProjectBuilder>>> implementation
 ({{{./xref/org/apache/maven/project/DefaultProjectBuilder.html}source}}), to prepare {{{./apidocs/org/apache/maven/project/MavenProject.html}<<<MavenProject>>> descriptor}} from POM files,

 * <<<LifecycleExecutor>>> component ({{{./apidocs/org/apache/maven/lifecycle/LifecycleExecutor.html}javadoc}}),

             * plugins that require dependency resolution although they usually run in phases of the build where project
             * artifacts haven't been assembled yet. The prime example of this is "mvn release:prepare".
             */
            if (aggregating && areAllDependenciesInReactor(session.getProjects(), result.getUnresolvedDependencies())) {

                processedVersions.put(versionsMetadata.getKey(), versionsMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        return Collections.emptyList();
    }

    @Override
    public Artifact transformArtifact(Artifact artifact) {
        return artifact;
    }

    @Override

            <executions>
              <execution>
                <id>clean-target-dir</id>
                <goals>
                  <goal>clean</goal>
                </goals>
                <phase>prepare-package</phase>
                <configuration>
                  <excludeDefaultDirectories>true</excludeDefaultDirectories>
                  <filesets>
                    <fileset>

                    phase("process-test-resources"),
                    phase("test-compile"),
                    phase("process-test-classes"),
                    phase("test"),
                    phase("prepare-package"),
                    phase("package"),
                    phase("pre-integration-test"),
                    phase("integration-test"),
                    phase("post-integration-test"),

                        <executions>
                            <execution>
                                <id>attach-sources</id>
                                <phase>prepare-package</phase>
                                <goals>
                                    <goal>jar-no-fork</goal>
                                </goals>
                            </execution>