/// <summary>
/// Retrieves the steps in a sequence before the current one.
/// </summary>
public static IEnumerable<Step> Before(this IEnumerable<Step> steps, Step current)
{
foreach (var step in steps)
{
if (step == current) break;
yield return step;
}
}
/// <summary>
/// Retrieves the steps in a sequence after the current one.
/// </summary>
public static IEnumerable<Step> After(this IEnumerable<Step> steps, Step current)
{
var found = false;
foreach (var step in steps)
{
if (found) yield return step;
else if (step == current) found = true;
}
}