String checksums = toRepositoryChecksumPolicy(RepositoryPolicy.CHECKSUM_POLICY_WARN); // the default
        String updates = RepositoryPolicy.UPDATE_POLICY_DAILY;

        if (policy != null) {
            enabled = policy.isEnabled();
            if (policy.getUpdatePolicy() != null) {
                updates = policy.getUpdatePolicy();
            }
            if (policy.getChecksumPolicy() != null) {

     */
    @Nonnull
    Model getEffectiveModel();

    /**
     * Gets the specified raw model as it was read from a model source. Apart from basic validation, a raw model has not
     * undergone any updates by the model builder, e.g. reflects neither inheritance nor interpolation. The model
     * identifier should be from the collection obtained by {@link #getModelIds()}. As a special case, an empty string

    }

    public void setPomPath(java.nio.file.Path pomPath) {
        update( getDelegate().withPomFile(pomPath));
    }

    public void setModelEncoding(String modelEncoding) {
        update(getDelegate().with().modelEncoding(modelEncoding).build());
    }

    /**
     * Gets the base directory for the corresponding project (if any).
     *

    private int degreeOfConcurrency = 1;

    private String builderId = "singlethreaded";

    private Map<String, List<ToolchainModel>> toolchains;

    /**
     * Suppress SNAPSHOT updates.
     *
     * @issue MNG-2681
     */
    private boolean noSnapshotUpdates = false;

    private boolean useLegacyLocalRepositoryManager = false;

    private Map<String, Object> data;

                    }
                } else {
                    update = updateCheckManager.isUpdateRequired(metadata, repository, file);
                }

                if (update) {
                    getLogger().info(metadata.getKey() + ": checking for updates from " + repository.getId());
                    try {

import org.apache.maven.api.services.model.ModelBuildingEvent;

/**
 * Holds data relevant for a model building event.
 */
record DefaultModelBuildingEvent(
        Model model, Consumer<Model> update, ModelBuilderRequest request, ModelProblemCollector problems)

            this.algorithm = algorithm;
        }

        @Override
        public void update(ByteBuffer input) {
            algorithm.update(input);
        }

        @Override
        public String checksum() {
            return algorithm.checksum();
        }
    }

            writer.write(artifact.getId());
        }

        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(artifact.getId().getBytes());
        byte[] digest = md.digest();

        String md5path = repository.pathOf(artifact) + ".md5";
        File md5artifactFile = new File(repository.getBasedir(), md5path);

~~ specific language governing permissions and limitations
~~ under the License.

  ---
  Offline Mode Design
  ---
  John Casey
  ---
  2005-04-08
  ---

Offline Mode Design

* UPDATE: 18-April-2005

  We cannot take the approach outlined below of detecting which remote
  repositories are "really" offline, since offline mode is more of a behavior,

     * provided model directly or to create a clone of the model and interpolate the clone. Callers should always use
     * the returned model and must not rely on the input model being updated.
     *
     * @param model The model to interpolate, must not be {@code null}.
     * @param projectDir The project directory, may be {@code null} if the model does not belong to a local project but