How to make separate the lines point by layer name

here i have import the cad file to revit to draw the mep services like pipe conduit duct. initially i have set different layer names for each services. now i want to take those points separate as per layer name. here i got mixing layers name with points. how to divide the points separate.

Try using List.GetItemAtIndex with index being 2 and the list at level 2. From there you can use a GroupByKey node.

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