+
+/**
+ * Returns whether an object is a class object.
+ *
+ * @param obj An Objective-C object.
+ *
+ * @return true if the object is a class or metaclass, false otherwise.
+ */
+OBJC_EXPORT BOOL object_isClass(id obj)
+ __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0);
+
+