code: def infer_outputs(self):
      return [
          C.output_variable(
              C.FreeDimension,
              self.inputs[0].dtype,
              self.inputs[0].dynamic_axes,
          ),
          C.output_variable(
              C.FreeDimension,
              self.inputs[0].dtype,
              self.inputs[0].dynamic_axes,
          ),
      ]
  
imports: import numpy
  import pytest
  import cntk
  from cntk.ops.functions import Function, UserFunction
  from .ops_test_utils import AA
label_desc: Use image node_id 2 for calling the MultiFreeDimensionOutputUserFunction obj's underlying member method code with example usage: obj.infer_outputs() and returns: list