code: def convert_slice_axis(node, **kwargs):
      
      name, input_nodes, attrs = get_inputs(node, kwargs)
  
      axes = int(attrs.get("axis"))
      starts = int(attrs.get("begin"))
      ends = int(attrs.get("end", None))
      if not ends:
          raise ValueError("Slice: ONNX doesnt't support 'None' in 'end' attribute")
  
      node = onnx.helper.make_node(
          "Slice",
          input_nodes,
          [name],
          axes=[axes],
          starts=[starts],
          ends=[ends],
          name=name,
      )
      return [node]
docs: Map MXNet's slice_axis operator attributes to onnx's Slice operator
      and return the created node.