Function gobble::tuple::or6

pub fn or6<A, B, C, D, E, F, V>(
    a: A, 
    b: B, 
    c: C, 
    d: D, 
    e: E, 
    f: F
) -> impl Parser<Out = V> where
    A: Parser<Out = V>,
    B: Parser<Out = V>,
    C: Parser<Out = V>,
    D: Parser<Out = V>,
    E: Parser<Out = V>,
    F: Parser<Out = V>,