Index: Doxyfile
==================================================================
--- Doxyfile
+++ Doxyfile
@@ -6,10 +6,12 @@
 GENERATE_LATEX = NO
 HIDE_UNDOC_CLASSES = YES
 HIDE_UNDOC_MEMBERS = YES
 TYPEDEF_HIDES_STRUCT = YES
 PREDEFINED = __OBJC__				\
+	     _Nonnull				\
+	     _Nullable				\
 	     DOXYGEN				\
 	     OF_BOXABLE				\
 	     OF_CONSUMED			\
 	     OF_DESIGNATED_INITIALIZER		\
 	     OF_GENERIC(...)=			\