Replace is_type_atomic(x, ATOMIC_TYPE_VOID) by the more concise is_type_void(x).
[cparser] / wrappergen /
drwxr-xr-x   ..
-rw-r--r-- 9068 write_fluffy.c
-rw-r--r-- 962 write_fluffy.h
-rw-r--r-- 14828 write_jna.c
-rw-r--r-- 1043 write_jna.h