class_docstr: Zoneout regularization.
class_docstr_tok: ["Zoneout","regularization","."]
code: def check_type_forward(self, in_types):
      type_check.expect(in_types.size() == 2)
  
file_path: chainer/chainer/functions/noise/zoneout.py
imports: import numpy
  from chainer import backend
  from chainer import configuration
  from chainer import function_node
  from chainer.utils import argument
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the Zoneout obj's underlying member method code with example usage: obj.check_type_forward(in_types) without return types