code: def __getitem__(self, item):
      return item
  
file_path: gluonts/test/mx/distribution/test_distribution_slice.py
imports: import mxnet
  import numpy
  import pytest
  import gluonts.mx.distribution.bijection
  from gluonts.mx.distribution import Beta, Binned, Dirichlet, Gamma, Laplace, MixtureDistribution, NegativeBinomial, PiecewiseLinear, Poisson, StudentT, TransformedDistribution, Uniform
  from gluonts.mx.distribution.box_cox_transform import BoxCoxTransform
  from gluonts.mx.distribution.gaussian import Gaussian
label_desc: Use image node_id 1 for calling the SliceHelper obj's underlying member method code with example usage: obj.__getitem__(item) and returns: item