code: def check_type_forward(self, in_types):
      type_check._argname(in_types, ("q"))
      (q_type,) = in_types
      type_check.expect(q_type.dtype.kind == "f")
  
file_path: chainer/chainer/functions/math/zeta.py
imports: from chainer.backends import cuda
  from chainer import function_node
  from chainer import utils
  from chainer.utils import type_check
label_desc: Use image node_id 3 for calling the Zeta obj's underlying member method code with example usage: obj.check_type_forward(in_types) without return types