class_docstr: Space to depth transformation.
class_docstr_tok: ["Space","to","depth","transformation","."]
code: def check_type_forward(self, in_types):
      type_check._argname(in_types, ("x",))
      type_check.expect(
          in_types[0].dtype.kind == "f", in_types[0].ndim == 4
      )
  
file_path: chainer/chainer/functions/array/space2depth.py
imports: import chainer
  from chainer import backend
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the Space2Depth obj's underlying member method code with example usage: obj.check_type_forward(in_types) without return types