class_docstr: A GLGraphItem displays graph information as
  a set of nodes connected by lines (as in 'graph theory', not 'graphics').
  Useful for drawing networks, trees, etc.
code: def __init__(self, parentItem=None, **kwds):
      super().__init__(parentItem=parentItem)
  
      self.edges = None
      self.edgeColor = QtGui.QColor(QtCore.Qt.GlobalColor.white)
      self.edgeWidth = 1.0
  
      self.scatter = GLScatterPlotItem()
      self.scatter.setParentItem(self)
      self.setData(**kwds)
  
file_path: pyqtgraph/pyqtgraph/opengl/items/GLGraphItem.py
imports: from OpenGL.GL import *
  import numpy
  from ...None import functions
  from ...Qt import QtCore, QtGui
  from ..GLGraphicsItem import GLGraphicsItem
  from .GLScatterPlotItem import GLScatterPlotItem
label_desc: Use image node_id 1 to create a new GLGraphItem object from inherited base classes: GLGraphicsItem with example: obj = GLGraphItem(parentItem)