EDM Tree label property(parent/child) logic for GL application

Create an EDMCS derived property such that:

•  Leaf nodes have no label (or Child if you prefer).-
• The immediate parent of any leaf is labeled Parent1.
• For any non-leaf node, if it has both leaf children and sub-parent children, the label is based on the sub-parent (i.e., ignore the leaf and use the max label among children, then add 1).
• Among siblings, the highest child level is used to determine the parent’s label.
  In short:
  Node’s Parent Level = (max of all child Parent Levels) + 1, where leaf child Parent Level = 0.

 ABC -> Parent5
  DEF -> Parent4
    JKL -> Parent3