code: def expected_output(self, in_data, w_init):
      return mx.np.round(in_data * w_init) * w_init
  
file_path: mxnet/tests/python/unittest/test_contrib_stes_op.py
imports: from common import xfail_when_nonstandard_decimal_separator
  import mxnet
  from mxnet import nd, autograd, gluon
  from mxnet.test_utils import default_device
label_desc: Use image node_id 3 for calling the RoundSTENET obj's underlying member method code with example usage: obj.expected_output(in_data, w_init) and returns: unknown