flow7<A, B, C, D, E, F, G, H>  function 
 
- B ab(- A
 
- C bc(- B
 
- D cd(- C
 
- E de(- D
 
- F ef(- E
 
- G fg(- F
 
- H gh(- G
 
Implementation
H Function(A) flow7<A, B, C, D, E, F, G, H>(
        B Function(A) ab,
        C Function(B) bc,
        D Function(C) cd,
        E Function(D) de,
        F Function(E) ef,
        G Function(F) fg,
        H Function(G) gh) =>
    (A a) => pipe8(a, ab, bc, cd, de, ef, fg, gh);