How to use the @truffle/codec.Utils.Conversion function in @truffle/codec

({ op, stack }) =>
            isCallMnemonic(op)
              ? //if it's a call, just fetch the address off the stack
                CodecUtils.Conversion.toAddress(stack[stack.length - 2])
              : //if it's not a call, just return undefined (we've gone back to
                //skipping creates)
                undefined
        )

...Object.entries(instances).map(([address, { binary }]) => ({
          [address]: CodecUtils.Conversion.toBytes(binary)
        }))
      )

((step || {}).stack || []).map(word =>
            CodecUtils.Conversion.toBytes(word)
          )