static void unregister(Object value) {
        if (value != null) {
            Map<Object, Object> m = getRegistry();
            if (m != null) {
                m.remove(value);
                if (m.isEmpty()) {
                    REGISTRY.remove();
                }
            }
        }
    }
<p>
Unregisters the given object.
</p>

<p>
Used by the reflection methods to avoid infinite loops.
</p>

@param value
                 The object to unregister.
android/android_framework/base/src/main/java/lang3/builder/ToStringStyle.java