code: def install_variable_get_item():
      variable.Variable.__getitem__ = get_item
  
imports: import numpy
  import chainer
  from chainer import backend
  from chainer import function_node
  from chainer import utils
  from chainer.utils import type_check
  from chainer import variable
  import chainerx
label_desc: Use image node_id 2 for calling a global function with example usage: install_variable_get_item() without return types