class_docstr: State manager for groups of widgets.
  
  WidgetGroup handles common problems that arise when dealing with groups of widgets like a control
  panel:
  - Provide a single place for saving / restoring the state of all widgets in the group
  - Provide a single signal for detecting when any of the widgets have changed
code: def findWidget(self, name):
      for w in self.widgetList:
          if self.widgetList[w] == name:
              return w
      return None
  
imports: import inspect
  import weakref
  from .Qt import QtCore, QtWidgets
label_desc: Use image node_id 3 for calling the WidgetGroup obj's underlying member method code with example usage: obj.findWidget(name) and returns: None, w