code: def to_unfolding(self, mode):
      return tr_to_unfolded(self, mode)
  
imports: import warnings
  import numpy
  import tensorly
  from ._factorized_tensor import FactorizedTensor
label_desc: Use image node_id 8 for calling the TRTensor obj's underlying member method code with example usage: obj.to_unfolding(mode) and returns: tr_to_unfolded