}

    private <T extends Credentials> T setCredentials(Class<T> clazz) {
        this.usesCredentials = true;
        T t = newCredentials(clazz);
        credentials.set(t);
        return t;
    }

    private <T extends Credentials> T newCredentials(Class<T> clazz) {
        return instantiator.newInstance(getCredentialsImplType(clazz));
    }

    public Property<Credentials> getConfiguredCredentials() {

        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')]

    @Override
    public ClassLoaderScope getParent() {
        return this; // should this be null?
    }

    @Override
    public boolean defines(Class<?> clazz) {
        return localClassLoader.equals(clazz.getClassLoader()) || exportClassLoader.equals(clazz.getClassLoader());
    }

    @Override
    public ClassLoaderScope lock() {
        return this;
    }

    @Override
    public boolean isLocked() {

            assert source.exists()
            def clazz = new File(dstDir, "org/test/${className}.class")
            assert clazz.exists()
            assertCompatibleWithJava8(clazz)
        }
    }

    private static void assertCompatibleWithJava8(File clazz) {
        ClassVisitor cv = new ClassVisitor(Opcodes.ASM7) {
            @Override

import java.lang.reflect.Modifier;

@GroovyASTTransformation
public class MagicFieldTransform implements ASTTransformation {
    public void visit(ASTNode[] nodes, SourceUnit source) {
        ClassNode clazz = (ClassNode) nodes[1];
        clazz.addField("magicField", Modifier.PUBLIC, ClassHelper.STRING_TYPE, new ConstantExpression("magicValue"));
    }

 */
class JclLoggerAdapter implements LoggerAdapter {

    protected final String sourceClass;

    protected final Log logger;

    public JclLoggerAdapter(final Class<?> clazz) {
        sourceClass = clazz.getName();
        logger = LogFactory.getLog(clazz);
    }

    @Override
    public boolean isFatalEnabled() {
        return logger.isFatalEnabled();
    }

    @Override

        val cleared = readBoolean()
        val updates = readList {
            val clazz = readClass()
            val key = read() as Any
            val value = read()
            when (clazz) {
                ConfigurationCacheEnvironmentChangeTracker.SystemPropertyMutate::class.java ->

    }

    static synchronized void removeClassFromGlobalClassSet(Class<?> clazz) {
        Iterator<ClassInfo> it = GLOBAL_CLASS_SET_ITEMS.iterator()
        while (it.hasNext()) {
            ClassInfo ci = it.next()
            if (ci.cachedClass.getTheClass().is(clazz)) {
                it.remove()
                break
            }
        }
    }

@GroovyASTTransformation
class GroovyMagicFieldTransform implements ASTTransformation, Opcodes {
    void visit(ASTNode[] nodes, SourceUnit source) {
        def clazz = (ClassNode) nodes[1]
        clazz.addField("magicField", ACC_PUBLIC, ClassHelper.STRING_TYPE, new StringExpressionThroughAsm())
    }

    private class StringExpressionThroughAsm extends BytecodeExpression {

    }

    /**
     * <code>abstract</code>かどうか返します。
     *
     * @param clazz
     *            クラス。{@literal null}であってはいけません
     * @return <code>abstract</code>なら{@literal true}
     */
    public static boolean isAbstract(final Class<?> clazz) {
        assertArgumentNotNull("clazz", clazz);

        return isAbstract(clazz.getModifiers());
    }

    /**
     * <code>abstract</code>かどうか返します。
     *