<extensions>
                    <extension>
                        <groupId>io.takari.maven</groupId>
                        <artifactId>takari-smart-builder</artifactId>
                        <version>1.0.2</version>
                    </extension>
                </extensions>
                """;
        Path userConf = userHome.resolve(".m2");

    } // -- void removeExtension( CoreExtension )

    /**
     * Set a set of build extensions to use from this project.
     *
     * @param extensions a extensions object.
     */
    public void setExtensions(List<CoreExtension> extensions) {
        this.extensions = extensions;
    } // -- void setExtensions( List )

    /**
     * Set the modelEncoding field.
     *

            context.logger.warn(
                    "Order of core extensions precedence is project > user > installation. Selected extensions are:");
            for (CoreExtension extension : selectedExtensions.values()) {
                context.logger.warn(
                        "* " + extension.getId() + " configured in " + formatLocation(extension.getLocation("")));
            }
        }

    }

    /**
     * Initializes the Markdown parser with extensions.
     */
    protected void initializeParser() {
        final List<org.commonmark.Extension> extensions = Arrays.asList(YamlFrontMatterExtension.create());
        parser = Parser.builder().extensions(extensions).build();
        textRenderer = TextContentRenderer.builder().build();
    }

    @Override

                extensions.add(new LoadedCoreExtension(extension, createExtension(extension, artifacts)));
            }
        }

        return Collections.unmodifiableList(extensions);
    }

    private CoreExtensionEntry createExtension(CoreExtension extension, List<Artifact> artifacts) throws Exception {
        String realmId = "coreExtension>" + extension.getGroupId() + ":" + extension.getArtifactId() + ":"

                extensions.add(createExtension(extension, artifacts));
            }
        }

        return Collections.unmodifiableList(extensions);
    }

    private CoreExtensionEntry createExtension(CoreExtension extension, List<Artifact> artifacts) throws Exception {
        String realmId = "coreExtension>" + extension.getGroupId() + ":" + extension.getArtifactId() + ":"
                + extension.getVersion();

     * extension) or 'plugin' (follows the rules from extensions
     * defined as plugins).
     *
     * @return String
     */
    public String getClassLoadingStrategy() {
        return this.classLoadingStrategy;
    } // -- String getClassLoadingStrategy()

    /**
     * Get the group ID of the extension's artifact.
     *
     * @return String
     */

   * <<<{{{./apidocs/org/apache/maven/api/cli/mvnup/package-summary.html}mvnup}}>>>, the Maven Upgrade tool.

 This API also defines {{{./core-extensions.html}Core Extensions model}} for <<<.mvn/extensions.xml>>>.

        serializer.setPrefix("", "http://maven.apache.org/EXTENSIONS/1.1.0");
        serializer.setPrefix("xsi", "http://www.w3.org/2001/XMLSchema-instance");
        serializer.startTag(NAMESPACE, tagName);
        serializer.attribute(
                "",
                "xsi:schemaLocation",
                "http://maven.apache.org/EXTENSIONS/1.1.0 https://maven.apache.org/xsd/core-extensions-1.1.0.xsd");

      - name: Prepare Mimir for Maven 4.x
        shell: bash
        run: |
          rm .mvn/extensions.xml
          mkdir -p ~/.m2
          cp .github/ci-extensions.xml ~/.m2/extensions.xml

      - name: Build Maven distributions
        shell: bash
        run: ./mvnw verify -e -B -V

      - name: List contents of target directory
        shell: bash