class DefaultIvyExtraInfoSpecTest extends Specification {
    def "can add extra info elements" () {
        def DefaultIvyExtraInfoSpec extraInfo = new DefaultIvyExtraInfoSpec()

        when:
        extraInfo.add("http://my.extra.info", "foo", "fooValue")

        then:
        extraInfo.asMap() == [ (new QName("http://my.extra.info", "foo")): "fooValue" ]
    }

        assert file("metadata").text == "{{http://my.extra.info/bar}bar=barValueChanged, {http://my.extra.info/foo}foo=fooValueChanged}\ndifferentBranch\nmilestone"
    }

    private static NamespaceId ns(String name) {
        return new NamespaceId("http://my.extra.info/${name}", name)
    }

    private static String declareNS(String name) {
        "(new javax.xml.namespace.QName('http://my.extra.info/${name}', '${name}'))"
    }

			// Write the LZW data.
			b.Write(enc)

			// Write extra bytes inside the same data sub-block where LZW data
			// ended. Each arbitrarily 0x02.
			b.WriteString(extra[:tc.extraExisting])
		}

		if tc.extraSeparate > 0 {
			// Data sub-block size. This indicates how many extra bytes follow.
			b.WriteByte(byte(tc.extraSeparate))
			b.WriteString(extra[:tc.extraSeparate])
		}

import org.gradle.internal.extensions.stdlib.uncheckedCast


inline fun <reified T : Any> Project.setSingletonProperty(value: T) {
    extra[T::class.java.name] = value
}


inline fun <reified T> Project.popSingletonProperty(): T? =
    extra.remove(T::class.java.name)?.uncheckedCast()


val Project.extra: ExtraPropertiesExtension

			Groups   []string            `json:"groups"`
			Extra    map[string][]string `json:"extra"`
		}
		type status struct {
			Authenticated bool     `json:"authenticated"`
			User          userInfo `json:"user"`
			Audiences     []string `json:"audiences"`
		}

		var extra map[string][]string
		if review.Status.User.Extra != nil {
			extra = map[string][]string{}
			for k, v := range review.Status.User.Extra {

dependencies {
    implementation 'org.ow2.asm:asm:8.0.1'
}

repositories {
    mavenCentral()
}

gradlePlugin {
    plugins {
        // here we register our plugin with an ID
        register("extra-java-module-info") {
            id = "extra-java-module-info"
            implementationClass = "org.gradle.sample.transform.javamodules.ExtraModuleInfoPlugin"
        }
    }

    implementation("org.ow2.asm:asm:8.0.1")
}

repositories {
    mavenCentral()
}

gradlePlugin {
    plugins {
        // here we register our plugin with an ID
        register("extra-java-module-info") {
            id = "extra-java-module-info"
            implementationClass = "org.gradle.sample.transform.javamodules.ExtraModuleInfoPlugin"
        }
    }

	extra := obj.Extra
	if extra == nil {
		extra = map[string]authorizationv1.ExtraValue{}
	}
	ret := map[string]interface{}{
		"user":   obj.User,
		"groups": obj.Groups,
		"uid":    string(obj.UID),
		"extra":  extra,
	}
	if obj.ResourceAttributes != nil {
		ret["resourceAttributes"] = map[string]string{

	extra := make(map[string]authorization.ExtraValue)
	for k, v := range csr.Spec.Extra {
		extra[k] = authorization.ExtraValue(v)
	}

	sar := &authorization.SubjectAccessReview{
		Spec: authorization.SubjectAccessReviewSpec{
			User:               csr.Spec.Username,
			UID:                csr.Spec.UID,
			Groups:             csr.Spec.Groups,
			Extra:              extra,

====

[[sec:extra_properties]]
==== Extra Properties

Gradle's enhanced objects, including projects, tasks, and source sets, can hold user-defined properties.

[.multi-language-text.lang-kotlin]
Add, read, and set extra properties via the owning object's `extra` property. Alternatively, you can access extra properties via Kotlin delegated properties using `by extra`.

[.multi-language-text.lang-groovy]