code: def get_output(self):
      self.output.forward(clear_buffer=True)
      return self.output.data.get_data("r")
  
file_path: nnabla/python/test/function/test_fused_convolution.py
imports: import pytest
  import numpy
  import nnabla
  import nnabla.functions
  import nnabla.ext_utils
  from nbla_test_utils import list_context
label_desc: Use image node_id 2 for calling the RefFusedConvolutionGraph obj's underlying member method code with example usage: obj.get_output() and returns: self