class_docstr: Implements the reduce logic.
  It must have a parameter *axes*.
class_docstr_tok: ["Implements","the","reduce","logic",".","It","must","have","a","parameter","*","axes","*","."]
code: def is_axes_empty(self, axes):
      return axes is None
  
imports: from typing import Any, Dict
  import numpy
  from onnx.onnx_pb import NodeProto
  from onnx.reference.op_run import OpRun, RuntimeTypeError
label_desc: Use image node_id 2 for calling the OpRunReduceNumpy obj's underlying member method code with example usage: obj.is_axes_empty(axes) and returns: unknown