code: def count(self):
      if self.topContainer is None:
          return 0
      return 1
  
imports: import weakref
  from ..Qt import QtWidgets
  from .Container import Container, HContainer, TContainer, VContainer
  from .Dock import Dock
  from .DockDrop import DockDrop
label_desc: Use image node_id 9 for calling the DockArea obj's underlying member method code with example usage: obj.count() and returns: int, int