void put(Key key, PluginDescriptor pluginDescriptor);

    PluginDescriptor get(Key key);

    PluginDescriptor get(Key key, PluginDescriptorSupplier supplier)
            throws PluginResolutionException, PluginDescriptorParsingException, InvalidPluginDescriptorException;

    void flush();

            return descriptor;
        }

        public List<Artifact> getArtifacts() {
            return artifacts;
        }
    }

    Key createKey(List<Artifact> extensionArtifacts);

    CacheRecord get(Key key);

    CacheRecord put(
            Key key, ClassRealm extensionRealm, ExtensionDescriptor extensionDescriptor, List<Artifact> artifacts);

    void flush();

    /**

            List<RemoteRepository> repositories,
            RepositorySystemSession session);

    CacheRecord get(Key key);

    CacheRecord get(Key key, PluginRealmSupplier supplier) throws PluginResolutionException, PluginContainerException;

    CacheRecord put(Key key, ClassRealm pluginRealm, List<Artifact> pluginArtifacts);

    void flush();

    /**

 * but can be extended by registering a {@code org.apache.maven.api.spi.LanguageProvider}.
 * <p>
 * Implementation must have {@code equals()} and {@code hashCode()} implemented, so implementations of this interface
 * can be used as keys.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
@SuppressWarnings("checkstyle:InterfaceIsType")
public interface Language extends ExtensibleEnum {

    /**

     */
    @Nonnull
    List<Path> getPaths();

    /**
     * Returns the file paths of all dependencies, dispatched according the tool options where to place them.
     * The {@link PathType} keys identify, for example, {@code --class-path} or {@code --module-path} options.
     * In the case of Java tools, the map may also contain {@code --patch-module} options, which are

      <id>deploymentRepo</id>
      <username>repouser</username>
      <password>repopwd</password>
    </server>
    -->

    <!-- Another sample, using keys to authenticate.
    <server>
      <id>siteServer</id>
      <privateKey>/path/to/private/key</privateKey>
      <passphrase>optional; leave empty if not used.</passphrase>
    </server>
    -->
  </servers>

  <!-- mirrors

                for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
                    String key = "env."
                            + (caseSensitive ? entry.getKey() : entry.getKey().toUpperCase(Locale.ENGLISH));
                    tmp.setProperty(key, entry.getValue());
                }
                envVars = tmp;
            }

            props.putAll(envVars);
        }
    }

            this.realm = realm;
            this.extensionArtifactFilter = extensionArtifactFilter;
        }
    }

    Key createKey(List<? extends ClassRealm> extensionRealms);

    CacheRecord get(Key key);

    CacheRecord put(Key key, ClassRealm projectRealm, DependencyFilter extensionArtifactFilter);

    void flush();

    /**

     */
    String ID_COMBINATION_MODE_ATTRIBUTE = "combine.id";

    /**
     * In case of complex XML structures, combining can be done based on keys.
     * This is a comma separated list of attribute names.
     */
    String KEYS_COMBINATION_MODE_ATTRIBUTE = "combine.keys";

    /**
     * This default mode for combining a DOM node during merge means that where element names match, the process will

        Key key = new CacheKey(
                project,
                project.getRemoteProjectRepositories(),
                scopesToCollect,
                scopesToResolve,
                aggregating,
                session);
        return keys.computeIfAbsent(key, k -> k);
    }

    @Override
    public CacheRecord get(Key key) throws LifecycleExecutionException {