Object <Foo: 0x100304550>: 0x100304550
Class Foo: 0x1000011b0
MetaClass Foo: 0x100001188
MetaClassClass NSObject: 0x7fffef97d0f0
MetaClassClassClass NSObject: 0x7fffef97d0f0
NSObject NSObject: 0x7fffef97d140
NSObjectMetaClass NSObject: 0x7fffef97d0f0