code: def convert_Cosh(
      func, opset_version, input_names, output_names, context
  ):
      return (onnx_helper.make_node("Cosh", input_names, output_names),)
  
imports: import numpy
  from onnx.mapping import NP_TYPE_TO_TENSOR_TYPE
  from onnx_chainer.functions.opset_version import support
  from onnx_chainer import onnx_helper
label_desc: Use image node_id 19 for calling a global function with example usage: convert_Cosh(func, opset_version, input_names, output_names, context) and returns: onnx_helper