static boolean isRegistered(Object value) {
        Map<Object, Object> m = getRegistry();
        return m != null && m.containsKey(value);
    }
<p>
Returns <code>true</code> if the registry contains the given object.
Used by the reflection methods to avoid infinite loops.
</p>

@param value
                 The object to lookup in the registry.
@return boolean <code>true</code> if the registry contains the given
            object.
android/android_framework/base/src/main/java/lang3/builder/ToStringStyle.java