specflow-moving-beyond-the-basics-code-reuse-14.cs

[StepArgumentTransformation(@"(\d+)(?:st|nd|rd|th)")]
public int GetIndex(int index)
{
    return index - 1;
}

[When(@"I remove the (.*) product")]
public void RemoveProduct(int index)
{
    _products.RemoveAt(index);
}

[When(@"I update the (.*) product to (.*)")]
public void UpdateProduct(int index, string productName)
{
    _products[index] = productName;
}