docstr: Multiply this object's transform by *tr*. 
  If local is True, then *tr* is multiplied on the right of the current transform::
  
      newTransform = transform * tr
      
  If local is False, then *tr* is instead multiplied on the left::
  
      newTransform = tr * transform
code: def applyTransform(self, tr, local):
      """
      Multiply this object's transform by *tr*.
      If local is True, then *tr* is multiplied on the right of the current transform::
  
          newTransform = transform * tr
  
      If local is False, then *tr* is instead multiplied on the left::
  
          newTransform = tr * transform
      """
      if local:
          self.setTransform(self.transform() * tr)
      else:
          self.setTransform(tr * self.transform())
  
imports: from OpenGL.GL import *
  from OpenGL import GL
  from ..None import Transform3D
  from ..Qt import QtCore
label_desc: Use image node_id 13 for calling the GLGraphicsItem obj's underlying member method code with example usage: obj.applyTransform(tr, local) without return types