Lerp between point on LineRenderer - unity3d

Question

Im stuck on how to lerp between points of the linerenderer which are added on runtime. It should animate in order. So IEnumerator should be used i guess.
private void makeLine(Transform finalPoint)
{
if(lastPoints == null)
{
lastPoints = finalPoint;
points.Add(lastPoints);
}
else
{
points.Add(finalPoint);
lr.enabled = true;
SetupLine();
}
}
private void SetupLine()
{
int pointLength = points.Count;
lr.positionCount = pointLength;
for (int i = 0; i < pointLength; i++)
{
lr.SetPosition(i, points[i].position);
// StartCoroutine(AnimateLine());
}
}
I found a code example. But now sure how to implement it so it would fit the code above:
private IEnumerator AnimateLine()
{
//coroutinIsDone = false;
float segmentDuration = animationDuration / points.Count;
for (int i = 0; i < points.Count - 1; i++)
{
float startTime = Time.time;
Vector3 startPosition = points[i].position;
Vector3 endPosition = points[i + 1].position;
Vector3 pos = startPosition;
while (pos != endPosition)
{
float t = (Time.time - startTime) / segmentDuration;
pos = Vector3.Lerp(startPosition, endPosition, t);
for (int j = i + 1; j < points.Count; j++)
lr.SetPosition(j, pos);
yield return null;
}
}
}