swaps.buildRouteExactIn() not defined.

[T3KRAJ]

The file balancer-js/examples/swaps/swap.ts is not working for v1.1.5 due to a function not defined error.

route = await swaps.buildRouteExactIn(
        from,
        to,
        tokenIn,
        tokenOut,
        amountIn,
        {
          maxSlippage,
          deadline,
        }
      );