code: def normalize(word):
      return word.strip().lower()
  
file_path: spark-nlp/examples/python/training/english/dl-ner/nerdl-graph/dataset_encoder.py
imports: import numpy
  import os
  import tensorflow
  import string
  import random
  import math
  import sys
label_desc: Use image node_id 3 for calling the DatasetEncoder obj's underlying member method code with example usage: obj.normalize(word) and returns: word