code: def setStretch(self, x=None, y=None):
      # print "setStretch", self, x, y
      self._stretch = (x, y)
      self.sigStretchChanged.emit()
  
imports: import weakref
  from ..Qt import QtCore, QtWidgets
  from .Dock import Dock
label_desc: Use image node_id 10 for calling the Container obj's underlying member method code with example usage: obj.setStretch(x, y) without return types