What is the correct way to implement custom container with dividers between element in Flex 4 Spark architecture? In Flex 3 I would add dividers in rawChildren array and in updateDisplayList function I would arrange position of dividers and children. I can't do this now because there is no rawChildren and I can't add dividers as elements, because dividers are internal details of control and they should not be available to user. I thought to add second group with dividers, but the layout of splitters depends on the layout of actual content. With new model of separated layouts for Groups I don't know how do this correctly.