static Set<Pair<IDKey, IDKey>> getRegistry() {
        return REGISTRY.get();
    }
<p>
Returns the registry of object pairs being traversed by the reflection
methods in the current thread.
</p>

@return Set the registry of objects being traversed
@since 3.0
android/android_framework/base/src/main/java/lang3/builder/EqualsBuilder.java