code: def left_button_release(self, obj, event):
      # print("Left Button released")
      self.OnLeftButtonUp()
      return
  
imports: import vtk
  import json
  import numpy
  import argparse
  import sys
  import subprocess
  from plyfile import PlyData
label_desc: Use image node_id 5 for calling the MyEvent obj's underlying member method code with example usage: obj.left_button_release(obj, event) without return types