class_docstr: Replacement for QGraphicsItemGroup
code: def addItem(self, item):
      item.setParentItem(self)
  
file_path: pyqtgraph/pyqtgraph/graphicsItems/ItemGroup.py
imports: from ..Qt import QtCore
  from .GraphicsObject import GraphicsObject
label_desc: Use image node_id 4 for calling the ItemGroup obj's underlying member method code with example usage: obj.addItem(item) without return types