DEFN Declaration#define DEFN(classname, name) See AlsoMacrosALWAYSAPPLE_KEXT_OVERRIDEDRIVERKIT_CONSUMEDDRIVERKIT_CONSUMES_THISDRIVERKIT_FRAMEWORK_INCLUDEDRIVERKIT_IOLIB_HDRIVERKIT_OSCOLLECTIONS_HDRIVERKIT_RETURNS_NOT_RETAINEDDRIVERKIT_RETURNS_RETAINEDDRIVERKIT_RETURNS_RETAINED_ON_NONZERODRIVERKIT_RETURNS_RETAINED_ON_ZEROERR_SUCCESSEXTENDSHIDDENIIG_CONCRETE