code: def __init__(self, widget, *args, **kwargs):
      ViewBox.__init__(self, *args, **kwargs)
      self.widget = widget
  
file_path: pyqtgraph/pyqtgraph/flowchart/FlowchartGraphicsView.py
imports: from ..graphicsItems.ViewBox import ViewBox
  from ..Qt import QtCore, QtGui, QtWidgets
  from ..widgets.GraphicsView import GraphicsView
label_desc: Use image node_id 1 to create a new FlowchartViewBox object from inherited base classes: ViewBox with example: obj = FlowchartViewBox(widget)