class_docstr: DEPRECATED.
code: def fit_on_sequences(self, sequences):
      self.document_count += len(sequences)
      for seq in sequences:
          seq = set(seq)
          for i in seq:
              self.index_docs[i] += 1
  
imports: import collections
  import hashlib
  import json
  import warnings
  import numpy
  from keras.api_export import keras_export
label_desc: Use image node_id 3 for calling the Tokenizer obj's underlying member method code with example usage: obj.fit_on_sequences(sequences) without return types