/**
         * Indicates whether the requested artifact was resolved. Note that the artifact might have been successfully
         * resolved despite {@link #getExceptions()} indicating transfer errors while trying to fetch the artifact from some
         * of the specified remote repositories.
         *
         * @return {@code true} if the artifact was resolved, {@code false} otherwise.
         */
        boolean isResolved();

    //                                                                        ============
    /**
     * Verifies that the CRUD mode matches the expected mode.
     *
     * @param crudMode the actual CRUD mode
     * @param expectedMode the expected CRUD mode
     */
    protected void verifyCrudMode(final int crudMode, final int expectedMode) {
        if (crudMode != expectedMode) {

    //                                                                        ============
    /**
     * Verifies that the CRUD mode matches the expected mode.
     *
     * @param crudMode the actual CRUD mode
     * @param expectedMode the expected CRUD mode
     */
    protected void verifyCrudMode(final int crudMode, final int expectedMode) {
        if (crudMode != expectedMode) {

   * map does not support {@code setValue} on its entries, {@code put}, or {@code putAll}.
   *
   * <p>When passed a key that is present in the map, {@code asMap().get(Object)} has the same
   * behavior as {@link #get}, returning a live collection. When passed a key that is not present,
   * however, {@code asMap().get(Object)} returns {@code null} instead of an empty collection.
   *

 *
 * <p>This class does <i>not</i> forward the {@code hashCode} and {@code equals} methods through to
 * the backing object, but relies on {@code Object}'s implementation. This is necessary to preserve
 * the symmetry of {@code equals}. Custom definitions of equality are usually based on an interface,
 * such as {@code Set} or {@code List}, so that the implementation of {@code equals} can cast the

     * <ul>
     * <li>{@code *} = everything,</li>
     * <li>{@code external:*} = everything not on the localhost and not file based,</li>
     * <li>{@code external:http:*} = any repository not on the localhost using HTTP,</li>
     * <li>{@code repo,repo1} = {@code repo} or {@code repo1},</li>
     * <li>{@code *,!repo1} = everything except {@code repo1}.</li>
     * </ul>
     *

 *
 * <p>For example, an XML escaper would convert the literal string {@code "Foo<Bar>"} into {@code
 * "Foo&lt;Bar&gt;"} to prevent {@code "<Bar>"} from being confused with an XML tag. When the
 * resulting XML document is parsed, the parser API will return this text as the original literal
 * string {@code "Foo<Bar>"}.
 *
 * <p>A {@code CharEscaper} instance is required to be stateless, and safe when used concurrently by

    //                                                                        ============
    /**
     * Verify the CRUD mode.
     * @param crudMode The CRUD mode.
     * @param expectedMode The expected mode.
     */
    protected void verifyCrudMode(final int crudMode, final int expectedMode) {
        if (crudMode != expectedMode) {
            throwValidationError(messages -> {

        }
      };
    }
  }

  /** Returns a new, empty {@code Multimap} with the specified implementation. */
  public abstract <K extends K0, V extends V0> Multimap<K, V> build();

  /**
   * Returns a {@code Multimap} with the specified implementation, initialized with the entries of
   * {@code multimap}.
   */
  public <K extends K0, V extends V0> Multimap<K, V> build(

        }
      };
    }
  }

  /** Returns a new, empty {@code Multimap} with the specified implementation. */
  public abstract <K extends K0, V extends V0> Multimap<K, V> build();

  /**
   * Returns a {@code Multimap} with the specified implementation, initialized with the entries of
   * {@code multimap}.
   */
  public <K extends K0, V extends V0> Multimap<K, V> build(