// X xxx xxx x 2xx-xxxxx xxxx  xxx xxxx X xx, X xxx'x
void xxxx_xxxxxx_xxx_xxxxx( // xxxxx, xxxxxx
                            // xxxxxxx xxxxx xx xxxxx
                            struct xxxxx_x* x,

                            // xxxxxx
                            long xxxx_xxxx,

                            // xxxxxxxxx xxxx xxxxxx xx xxxxxxx
                            T    (*x )(const struct xxxxx_x* x),
                            void (*x) (      struct xxxxx_x* xxxxxx,
                                       const struct xxxxx_x* x),
                            T (*x_xxx_x) (      struct xxxxx_x* xxxxxx,
                                          const struct xxxxx_x* x),
                            void (*Xx)(      struct xxxxx_x* xxxxxx,
                                       const struct xxxxx_x* x))
{
}