code: def call(self, input_seq, training=False):
      out = self.lstm_sequential(input_seq, training=training)
      return out
  
file_path: BigDL/python/chronos/src/bigdl/chronos/model/tf2/VanillaLSTM_keras.py
imports: import tensorflow
  from bigdl.nano.tf.keras import Sequential, Model
  from tensorflow.keras.layers import LSTM, Reshape, Dense, Input
label_desc: Use image node_id 2 for calling the LSTMModel obj's underlying member method code with example usage: obj.call(input_seq, training) and returns: out