code: def insert(self, new, pos=None, neighbor=None):
      if self.topContainer is not None:
          # Adding new top-level container; addContainer() should
          # take care of giving the old top container a new home.
          self.topContainer.containerChanged(None)
      self.layout.addWidget(new)
      new.containerChanged(self)
      self.topContainer = new
      self.dockdrop.raiseOverlay()
  
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 8 for calling the DockArea obj's underlying member method code with example usage: obj.insert(new, pos, neighbor) without return types