code: def result_type(
      *arrays_and_dtypes: Union[(None, mx.ndarray.NDArray)]
  ) -> ivy.Dtype:
      raise IvyNotImplementedException()
  
imports: import mxnet
  from typing import Optional, Union, Sequence, List
  import numpy
  import ivy
  from ivy.functional.ivy.data_type import _handle_nestable_dtype_info
  from ivy.utils.exceptions import IvyNotImplementedException
label_desc: Use image node_id 6 for calling a global function with example usage: result_type() without return types