RhsFlatMappedCpsExpr
class RhsFlatMappedCpsExpr[F[_], T, V](using thisQuotes: Quotes)(monad: Expr[CpsMonad[F]], prev: Seq[ExprTreeGen], oldValDef: ValDef, cpsRhs: CpsExpr[F, V], next: CpsExpr[F, T])(`evidence$2`: Type[F], `evidence$3`: Type[T], `evidence$4`: Type[V]) extends AsyncCpsExpr[F, T]