class_docstr: vocabulary 
docstr: candy _mapping
docstr_tok: ["candy","_mapping"]
code: def mapping(self):
      """candy _mapping"""
      return self._mapping
  
file_path: delta/delta/data/utils/vocabulary.py
imports: import copy
  import collections
label_desc: Use image node_id 6 for calling the Vocabulary obj's underlying member method code with example usage: obj.mapping() and returns: self