private static IEnumerable <Step> CreateStepsPrivate([NotNull] IEnumerable <StepDefinition> steps, [NotNull] ProcessorArgs args, [CanBeNull] IPipelineController controller = null)
{
Assert.ArgumentNotNull(steps, nameof(steps));
Assert.ArgumentNotNull(args, nameof(args));
foreach (StepDefinition stepDefinition in steps)
{
var argsName = stepDefinition.ArgsName.EmptyToNull();
Step step = new Step(ProcessorManager.CreateProcessors(stepDefinition.ProcessorDefinitions, args, controller), argsName);
Assert.IsNotNull(step, "Can't instantiate step");
yield return(step);
}
}