pub type bam_plp_auto_f = Option<unsafe extern "C" fn(data: *mut c_void, b: *mut bam1_t) -> c_int>;
enum bam_plp_auto_f { None, Some(unsafe extern "C" fn(_: *mut c_void, _: *mut bam1_t) -> i32), }
No value.
Some value of type T.
T