nssystemdirectories(3) mojave man page | unix.com

NSSystemDirectories(3)					   BSD Library Functions Manual 				    NSSystemDirectories(3)

NAME
     The NSSystemDirectories API has been deprecated and replaced by sysdir(3) API.

HISTORY
     The NSSystemDirectories API first appeared in OS X 10.0. Deprecated and replaced by sysdir API in in OS X 10.12, iOS 10, watchOS 3 and tvOS
     10.

Darwin								 December 22, 2015							    Darwin