fun <out A, out B, out C, out D, out E, out F, out G, out H, out I, out J, out K, out L, out M, out N, out O> Tuple15(first: A, second: B, third: C, fourth: D, fifth: E, sixth: F, seventh: G, eighth: H, ninth: I, tenth: J, eleventh: K, twelfth: L, thirteenth: M, fourteenth: N, fifteenth: O)(source)