code: def parse(self, commands):
      pass
  
imports: import unittest
  import numpy
  from vispy import gloo, app
  from vispy.gloo.program import Program
  from vispy.testing import run_tests_if_main, requires_application
  from vispy.gloo.context import set_current_canvas, forget_canvas
label_desc: Use image node_id 2 for calling the DummyParser obj's underlying member method code with example usage: obj.parse(commands) without return types