import java.io.File;

abstract class CurrentGradleInstallationLocator {

    private static final String BEACON_CLASS_NAME = "org.gradle.internal.installation.beacon.InstallationBeacon";

    private CurrentGradleInstallationLocator() {
    }

    public synchronized static CurrentGradleInstallation locate() {
        return locateViaClassLoader(CurrentGradleInstallationLocator.class.getClassLoader());
    }

        given:
        def jar = distDir.file("$jarDirectory/mydep-1.2.jar")
        createJarFile(jar)

        when:
        def clazz = loadClassFromJar(jar)
        def installation = CurrentGradleInstallationLocator.locateViaClass(clazz).getInstallation()

        then:
        installation.gradleHome == distDir
        installation.libDirs == [new File(distDir, 'lib'), new File(distDir, 'lib/plugins')]

        where:

 * limitations under the License.
 */

package org.gradle.internal.installation.beacon;

/**
 * This marker is used to locate the “source” Gradle distribution at runtime.
 * See {@code CurrentGradleInstallationLocator}.
 */
@SuppressWarnings("unused")
public interface InstallationBeacon {

        return locate().getInstallation();
    }

    public synchronized static CurrentGradleInstallation locate() {
        if (instance == null) {
            instance = CurrentGradleInstallationLocator.locate();
        }
        return instance;
    }

Class <org.gradle.internal.installation.CurrentGradleInstallationLocator> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (CurrentGradleInstallationLocator.java:0)