*
   * <p>A collection is considered immutable if:
   *
   * <ol>
   *   <li>All its mutation methods result in UnsupportedOperationException, and do not change the
   *       underlying contents.
   *   <li>All methods that return objects that can indirectly mutate the collection throw
   *       UnsupportedOperationException when those mutators are called.
   * </ol>
   *
   * @param collection the presumed-immutable collection

   *
   * <p>A collection is considered immutable if:
   *
   * <ol>
   *   <li>All its mutation methods result in UnsupportedOperationException, and do not change the
   *       underlying contents.
   *   <li>All methods that return objects that can indirectly mutate the collection throw
   *       UnsupportedOperationException when those mutators are called.
   * </ol>
   *
   * @param collection the presumed-immutable collection

 * </ol>
 * <p>By caching artifacts in the local repository, Maven minimizes the need to repeatedly download the same artifacts, thus optimizing the build process.</p>
 *
 * <h2>Repository Configuration</h2>
 *
 * <p>Repositories can be configured at various levels:<ol>

   *
   * <ul>
   *   <li>When a {@code ListenableFuture} listener is registered to run under {@code
   *       directExecutor}, the listener can execute in any of three possible threads:
   *       <ol>
   *         <li>When a thread attaches a listener to a {@code ListenableFuture} that's already
   *             complete, the listener runs immediately in that thread.

 *
 * <p>For instance, if <i>steps</i> is 5, one example sequence that will be tested is:
 *
 * <ol>
 *   <li>remove();
 *   <li>hasNext()
 *   <li>hasNext();
 *   <li>remove();
 *   <li>next();
 * </ol>
 *
 * <p>This particular order of operations may be unrealistic, and testing all 3^5 of them may be

 *
 * <p>Repositories can be configured at various levels:</p><ol>
 * <li>POM: Repositories can be specified in the {@code pom.xml} file under the {@code <repositories>} and {@code <pluginRepositories>} sections.</li>
 * <li>Settings: the {@code settings.xml} can be used to provide additional repositories in the three level of settings (user, project, installation).</li>
 * </ol>

				levels := strings.Split(loggerLevelString, ",")
				for _, ol := range levels {
					if !strings.Contains(ol, ":") && !strings.Contains(ol, "=") {
						level, ok := stringToLevel[ol]
						if ok {
							destLoggerLevels = map[string]Level{
								defaultLoggerName: level,
							}
						} else {
							return fmt.Errorf("unrecognized logging level: %v", ol)
						}
					} else {

/**
 * There are various forms of results that are represented by this class:
 * <ol>
 * <li>success - in which case only the model field is set
 * <li>success with warnings - model field + non-error model problems
 * <li>error - no model, but diagnostics
 * <li>error - (partial) model and diagnostics
 * </ol>
 * Could encode these variants as subclasses, but kept in one for now
 *
 * @param <T> the model type

 *     when they are not available locally.</li>
 * </ul>
 *
 * <p>When resolving artifacts, Maven follows this order:</p><ol>
 * <li>Check Local Repository: Maven first checks if the artifact is available in the local repository.</li>

				levels := strings.Split(loggerLevelString, ",")
				for _, ol := range levels {
					if !strings.Contains(ol, ":") && !strings.Contains(ol, "=") {
						level, ok := stringToLevel[ol]
						if ok {
							destLoggerLevels = map[string]Level{
								defaultLoggerName: level,
							}
						} else {
							return fmt.Errorf("unrecognized logging level: %v", ol)
						}
					} else {