pub unsafe extern "C" fn BIO_asn1_set_suffix(
b: *mut bio_st,
suffix: Option<unsafe extern "C" fn(*mut bio_st, *mut *mut u8, *mut i32, *mut c_void) -> i32>,
suffix_free: Option<unsafe extern "C" fn(*mut bio_st, *mut *mut u8, *mut i32, *mut c_void) -> i32>,
) -> i32