code: @Override
      @SuppressWarnings("unchecked")
      public <H> Choice7<A, B, C, D, E, H, G> biMapL(Function<? super F, ? extends H> fn) {
          return (Choice7<A, B, C, D, E, H, G>) Bifunctor.super.biMapL(fn);
      }
docs: {@inheritDoc}