code: def forward(self, x):
      return self.model(x)
  
imports: import boto3
  import mxnet
  import os
  import numpy
  import logging
  from mxnet import gluon
  from mxnet.gluon import nn
  import re
  from mxnet.test_utils import assert_almost_equal
label_desc: Use image node_id 2 for calling the SimpleLSTMModel obj's underlying member method code with example usage: obj.forward(x) and returns: self