code: def container(self):
      return self._container
  
imports: import warnings
  from ..Qt import QtCore, QtGui, QtWidgets
  from ..widgets.VerticalLabel import VerticalLabel
  from .DockDrop import DockDrop
label_desc: Use image node_id 16 for calling the Dock obj's underlying member method code with example usage: obj.container() and returns: self