Add the given BidiFlow as the next step in a bidirectional transformation pipeline. By convention protocol stacks are growing to the left: the right most is the bottom layer, the closest to the metal. {{{ +----------------------------+ | Resulting BidiFlow | | | | +------+ +------+ | I1 ~~> | | ~O1~> | | ~~> OO1 | | this | | bidi | | O2 <~~ | | <~I2~ | | <~~ II2 | +------+ +------+ | +----------------------------+ }}} The materialized value of the combined BidiFlowTIn1, TOut1, TIn2, TOut2, TMat will be the materialized value of the current flow (ignoring the other BidiFlow’s value), use AtopMatTOut12, TIn21, TMat2, TMat3(BidiFlowTOut1, TOut12, TIn21, TIn2, TMat2, FuncTMat, TMat2, TMat3) if a different strategy is needed.

public BidiFlow<TIn1, TOut12, TIn21, TOut2, TMat> Atop<TOut12, TIn21, TMat2>(
	BidiFlow<TOut1, TOut12, TIn21, TIn2, TMat2> bidi
)

member Atop : 
        bidi : BidiFlow<'TOut1, 'TOut12, 'TIn21, 'TIn2, 'TMat2> -> BidiFlow<'TIn1, 'TOut12, 'TIn21, 'TOut2, 'TMat>