Function gpgme_sys::gpgme_op_set_uid_flag

pub unsafe extern "C" fn gpgme_op_set_uid_flag(
    ctx: gpgme_ctx_t, 
    key: gpgme_key_t, 
    userid: *const c_char, 
    name: *const c_char, 
    value: *const c_char
) -> gpgme_error_t