* cache.
     *
     * @param project The project that employs the plugin realm, must not be {@code null}.
     * @param record The cache record being used for the project, must not be {@code null}.
     */
    void register(MavenProject project, Key cacheKey, CacheRecord record);

    /**
     * Set a new list of remote repositories to use the execution request. This is necessary if you perform
     * transformations on the remote repositories being used. For example if you replace existing repositories with
     * mirrors then it's easier to just replace the whole list with a new list of transformed repositories.
     *
     * @param repositories

     * This method finds out whether collecting projects failed because of the following scenario:
     * - A multi-module project containing a module which is a plugin and another module which depends on it.
     * - Just the plugin is being built with the -f <pom> flag.
     * - Because of inter-module dependency collection, all projects in the multi-module project are collected.
     * - The plugin is not yet installed in a repository.
     *

                        Severity.WARNING,
                        Version.BASE,
                        "parent.version",
                        null,
                        "is either LATEST or RELEASE (both of them are being deprecated)",
                        parent);
            }
        }

        if (request.getValidationLevel() >= ModelBuilderRequest.VALIDATION_LEVEL_MAVEN_2_0) {
            Set<String> modules = new HashSet<>();

foreach configuration element:
 - if read only and being set squawk

 - find the parameter
 - get value from expression or default
 - if required and null squawk

      <configuration>
        <attached implementation="boolean" default-value="true"/>

        if (pluginArtifactRepositories == null) {
            pluginArtifactRepositories = new ArrayList<>();
        }
        return pluginArtifactRepositories;
    }

    // TODO this does not belong here.
    @Override
    public ProjectBuildingRequest getProjectBuildingRequest() {
        if (projectBuildingRequest == null) {
            projectBuildingRequest = new DefaultProjectBuildingRequest();

     * full range), snapshots are banned if root project is not a snapshot, and if range for {@code org.foo:bar} is
     * being processed, version 1 is omitted.
     *
     * @since 4.0.0
     */
    private static final String MAVEN_VERSION_FILTERS = "maven.versionFilters";

    /**

implementation class. Finally, some Log implementations (such as the one for Log4J) require an external configuration file for the entire logging environment. This file should be prepared in a manner that is specific to the actual logging technology being used. Using the Logging Package APIs Use of the Logging Package APIs, from the perspective of an application component, consists of the following steps: Acquire a reference to an instance of org.apache.commons.logging.Log, by calling the factory method...

          <version>1.1.0+</version>
          <type>String</type>
          <defaultValue>default,legacy</defaultValue>
          <description>
            The layouts of repositories being mirrored. This value can be used to restrict the usage
            of the mirror to repositories with a matching layout (apart from a matching id).
            @since Maven 3.
          </description>
        </field>

public abstract class BuildSummary {

    /**
     * The project being summarized.
     */
    private final MavenProject project;

    /**
     * The build time of the project in milliseconds.
     */
    private final long time;

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.