code: def sparse_tensor_to_rpc_format(sparse_tensor):
      r"""
      A helper function creates a list containing the indices, values, and size
      of a coalesced sparse tensor.
      Args:
          sparse_tensor (torch.Tensor): sparse_coo_tensor represented as a list
      """
      sparse_tensor = sparse_tensor.coalesce()
      return [
          sparse_tensor.indices(),
          sparse_tensor.values(),
          sparse_tensor.size(),
      ]
  
label_desc: Use image node_id 1 for calling a global function with example usage: sparse_tensor_to_rpc_format(sparse_tensor) and returns: list