import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

public class ClassLoaderDetails implements Serializable {
    // TODO:ADAM - using a UUID means we create a ClassLoader hierarchy for each daemon process we talk to. Instead, use the spec to decide whether to reuse a ClassLoader
    public final UUID uuid;
    public final ClassLoaderSpec spec;

        assertBothExistsAndOneIsBeforeOther(hierarchy, middle1, root1);
        assertBothExistsAndOneIsBeforeOther(hierarchy, middle2, root2);
    }

    private static void assertBothExistsAndOneIsBeforeOther(Set<Configuration> hierarchy, Configuration beforeConf, Configuration afterConf) {
        assert hierarchy.contains(beforeConf)
        assert hierarchy.contains(afterConf)

1. We generate interceptors from the annotations declared in the source code 
2. We collect Gradle API type hierarchy

The first one is important for both configuration cache instrumentation and API upgrades while the second one is used just for API upgrades. 
Collecting the Gradle API type hierarchy is fully automatic, while declaring interceptors have to be done by Gradle developers. 

```mermaid
flowchart TB

// The test verifies that all expected spans (a client span and a server span for each service call in the sample bookinfo app)
// are generated and that they are all a part of the same distributed trace with correct hierarchy and name.
func TestClientTracing(t *testing.T) {
	framework.NewTest(t).
		Run(func(t framework.TestContext) {
			appNsInst := tracing.GetAppNamespace()

            buildscript { dependencies { classpath(files('${someLib.toURI()}')) } }
        """

        // Load the StaticData class in the different sub-sub-projects
        // for a more interesting ClassLoader hierarchy.
        for (projectDir in ['foo/foo', 'bar/bar']) {
            file("$projectDir/build.gradle") << """
                buildscript { dependencies { classpath(files('${staticDataLib.toURI()}')) } }

    public DefaultSerializerRegistry() {
        this(true);
    }

    public DefaultSerializerRegistry(boolean supportClassHierarchy) {
        this.classMatcher = supportClassHierarchy ? SerializerClassMatcherStrategy.HIERARCHY : SerializerClassMatcherStrategy.STRICT;
    }

    @Override
    public <T> void register(Class<T> implementationType, final Serializer<T> serializer) {

        withValidityAssertion { analysisSession.symbolDeclarationOverridesProvider.getDirectlyOverriddenSymbols(this) }

    /**
     * Checks if [this] class has [superClass] as its superclass somewhere in the inheritance hierarchy.
     *
     * N.B. The class is not considered to be a subclass of itself, so `myClass.isSubClassOf(myClass)` is always `false`.
     */

// The test verifies that all expected spans (a client span and a server span for each service call in the sample bookinfo app)
// are generated and that they are all a part of the same distributed trace with correct hierarchy and name.
//
// More information on distributed tracing can be found here: https://istio.io/docs/tasks/telemetry/distributed-tracing/zipkin/
func TestServerTracing(t *testing.T) {
	framework.NewTest(t).

    private final OutputEventListener listener;
    private final LogHeaderFormatter headerFormatter;
    private final boolean verbose;

    // Maintain a hierarchy of all progress operations in progress — heads up: this is a *forest*, not just 1 tree
    private final Map<OperationIdentifier, OperationState> operationsInProgress = new LinkedHashMap<OperationIdentifier, OperationState>();

import org.gradle.vcs.SourceControl;

import javax.annotation.Nullable;
import java.io.File;
import java.util.Arrays;

/**
 * <p>Declares the configuration required to instantiate and configure the hierarchy of {@link
 * org.gradle.api.Project} instances which are to participate in a build.</p>
 *
 * <p>There is a one-to-one correspondence between a <code>Settings</code> instance and a <code>{@value