extensionMetaData.addMixin('a', 'org.gradle.ExtensionA2')
        extensionMetaData.addMixin('b', 'org.gradle.ExtensionB')
        ClassDoc extensionA1 = classDoc('org.gradle.ExtensionA1')
        ClassDoc extensionA2 = classDoc('org.gradle.ExtensionA2')
        ClassDoc extensionB = classDoc('org.gradle.ExtensionB')
        _ * docModel.getClassDoc('org.gradle.ExtensionA1') >> extensionA1

func (in *ExtensionA) DeepCopyInto(out *ExtensionA) {
	*out = *in
	out.TypeMeta = in.TypeMeta
	return
}

// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExtensionA.
func (in *ExtensionA) DeepCopy() *ExtensionA {
	if in == nil {
		return nil
	}
	out := new(ExtensionA)
	in.DeepCopyInto(out)
	return out
}

	// external version.
	scheme.AddKnownTypeWithName(externalGV.WithKind("A"), &runtimetesting.ExtensionA{})
	scheme.AddKnownTypeWithName(externalGV.WithKind("B"), &runtimetesting.ExtensionB{})
	scheme.AddKnownTypeWithName(internalGV.WithKind("A"), &runtimetesting.ExtensionA{})
	scheme.AddKnownTypeWithName(internalGV.WithKind("B"), &runtimetesting.ExtensionB{})
	utilruntime.Must(runtimetesting.RegisterConversions(scheme))

type ExternalExtensionType struct {
	runtime.TypeMeta `json:",inline"`
	Extension        runtime.RawExtension `json:"extension"`
}

// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type InternalExtensionType struct {
	runtime.TypeMeta `json:",inline"`
	Extension        runtime.Object `json:"extension"`
}

// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object

  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->

<extensions>
    <extension>
        <groupId>com.gradle</groupId>
        <artifactId>gradle-enterprise-maven-extension</artifactId>
        <version>1.14.4</version>
    </extension>

  xml.namespace="http://maven.apache.org/EXTENSIONS/${version}"
  xml.schemaLocation="http://maven.apache.org/xsd/core-extensions-${version}.xsd">

  <id>core-extensions</id>
  <name>CoreExtensions</name>
  <description><![CDATA[
  <p>This is a reference for the Core Extensions descriptor.</p>
  <p>The default location for the Core Extensions descriptor file is <code>${maven.projectBasedir}/.mvn/extensions.xml</code></p>
  ]]></description>

}

func getXListType(schema *spec.Schema) string {
	s, _ := schema.Extensions.GetString(extListType)
	return s
}

func getXMapType(schema *spec.Schema) string {
	s, _ := schema.Extensions.GetString(extMapType)
	return s
}

func getXListMapKeys(schema *spec.Schema) []string {
	mapKeys, ok := schema.Extensions.GetStringSlice(extListMapKeys)
	if !ok {
		return nil
	}
	return mapKeys
}

  <id>extension</id>
  <name>ExtensionDescriptor</name>
  <description><![CDATA[
    Extension descriptor, stored in <code>META-INF/maven/extension.xml</code> in an extension's jar artifact to
    precisely control parts of the extension and dependencies to expose in the API class loader.

~~ under the License.

 ---
 Maven Core Extensions Reference
 ---
 Hervé Boutemy
 ---
 2016-06-25
 ---

Maven Core Extensions Reference

  Maven core provides default {{{./extension.html}extensions}} as defined in <<</META-INF/maven/extension.xml>>>:

      | provoke linkage errors for wagons contributed by build extensions. We also don't need to exclude the wagons
      | from plugins. Plugins that use wagons directly and declare the corresponding dependency will simply use a
      | wagon from their plugin realm.
     -->
  </exportedArtifacts>
</extension>