code: def add_anonymous_label(self):
      return self._generate_anonymous_column(ANONYMOUS_LABEL)
  
file_path: FATE/python/fate/arch/dataframe/manager/utils/_anonymous_generator.py
imports: import copy
  import pandas
label_desc: Use image node_id 5 for calling the AnonymousGenerator obj's underlying member method code with example usage: obj.add_anonymous_label() and returns: self