Function gpgme_sys::gpgme_op_setexpire_start

pub unsafe extern "C" fn gpgme_op_setexpire_start(
    ctx: gpgme_ctx_t,
    key: gpgme_key_t,
    expires: c_ulong,
    subfprs: *const c_char,
    reserved: c_uint
) -> gpgme_error_t