release artifact directory is not expected to provide metadata.

 []

 The following are generated from this model:

   * {{{./apidocs/index.html}Java sources}} with Reader and Writers for the Xpp3 XML parser, to read and write <<<maven-metadata(-*).xml>>> files,

   * a {{{../../api/maven-api-metadata/repository-metadata.html}Descriptor Reference}}.
 

    }

    @Override
    public void addSourceRoot(@Nonnull Project project, @Nonnull SourceRoot source) {
        MavenProject prj = getMavenProject(requireNonNull(project, "project" + " cannot be null"));
        prj.addSourceRoot(requireNonNull(source, "source" + " cannot be null"));
    }

    @Override
    public void addSourceRoot(
            @Nonnull Project project,

            <id>modello</id>
            <goals>
              <goal>velocity</goal>
              <goal>xdoc</goal>
              <goal>xsd</goal>
            </goals>
            <phase>generate-sources</phase>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

        </configuration>
        <executions>
          <execution>
            <id>velocity</id>
            <goals>
              <goal>velocity</goal>
            </goals>
            <phase>generate-sources</phase>
            <configuration>
              <templates>
                <template>model-v3.vm</template>
              </templates>
              <params>

      <![CDATA[
      This is a list of attachments to the main artifact produced by building the current POM.
      Attachments are derived works, based on the main build process, such as an ejb-client jar,
      project sources jar, etc.
    ]]></description>
  </expression>
</expressions>

                new DefaultType(Type.JAVADOC, Language.JAVA_FAMILY, "jar", "javadoc", false, JavaPathType.CLASSES),
                new DefaultType(Type.JAVA_SOURCE, Language.JAVA_FAMILY, "jar", "sources", false),
                new DefaultType(
                        Type.TEST_JAR,
                        Language.JAVA_FAMILY,
                        "jar",
                        "tests",

        context.logger.debug("Configured core extensions (in precedence order):");
        for (CoreExtensions source : configuredCoreExtensions) {
            context.logger.debug("* Source file: " + source.source());
            for (CoreExtension extension : source.coreExtensions()) {
                context.logger.debug("  - " + extension.getId() + " -> " + formatLocation(extension.getLocation("")));
            }

      </description>
      <fields>
        <field>
          <name>sources</name>
          <version>4.1.0+</version>
          <description>
            All the sources to compile and resources files to copy for a project or it's unit tests.
            The sources can be Java source files, generated source files, scripts, or resources for examples.
            Each source is specified by a {@code directory} element, which is relative to the POM.

  // Always compile kotlin classes before the module descriptor.
  dependsOn(compileKotlinTask)

  // Add the module-info source file.
  source(sourceDir)

  // Also add the module-info.java source file to the Kotlin compile task.
  // The Kotlin compiler will parse and check module dependencies,
  // but it currently won't compile to a module-info.class file.

              <compileSourceRoots>
                <compileSourceRoot>${project.basedir}/src</compileSourceRoot>
              </compileSourceRoots>

              <!-- JPMS needs access to the module sources to complete a modular Java build. -->
              <compilerArgs>
                <arg>-sourcepath</arg>
                <arg>${project.basedir}/src</arg>
                <arg>--add-reads=com.google.common=ALL-UNNAMED</arg>