code: def normalize(word):
      return word.strip().lower()
  
file_path: spark-nlp/python/sparknlp/training/_tf_graph_builders_1x/ner_dl/dataset_encoder.py
imports: import random
  import string
  import numpy
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