code: def __init__(self, name, width, height, children):
      self.name = name
      self.width = width
      self.height = height
      self.children = children
  
imports: from ..expr.types import tstruct
label_desc: Use image node_id 1 to create a new PlacementTree object  with example: obj = PlacementTree(name, width, height, children)