class_docstr: Concatenate variables along a new axis.
class_docstr_tok: ["Concatenate","variables","along","a","new","axis","."]
code: def check_type_forward(self, in_types):
      type_check.expect(in_types.size() > 0)
      type_check.expect(
          -in_types[0].ndim - 1 <= self.axis,
          self.axis <= in_types[0].ndim,
      )
      dtype = in_types[0].dtype
      shape = in_types[0].shape
      for x_type in in_types[1:]:
          type_check.expect(
              x_type.dtype == dtype,
              x_type.shape == shape,
          )
  
file_path: chainer/chainer/functions/array/stack.py
imports: import chainer
  from chainer import backend
  from chainer import function_node
  from chainer.utils import type_check
  import chainerx
label_desc: Use image node_id 2 for calling the Stack obj's underlying member method code with example usage: obj.check_type_forward(in_types) without return types