class_docstr: Suggested backoff chain; includes at least on of each
  type of major sequential backoff class from backoff.py.
code: def __repr__(self):
      return f"<BackoffGreekLemmatizer v0.1>"
  
file_path: cltk/src/cltk/lemmatize/grc.py
imports: import os
  from typing import List
  from cltk.lemmatize.backoff import DictLemmatizer, IdentityLemmatizer, RegexpLemmatizer, UnigramLemmatizer
  from cltk.utils import CLTK_DATA_DIR
  from cltk.utils.file_operations import open_pickle
label_desc: Use image node_id 5 for calling the GreekBackoffLemmatizer obj's underlying member method code with example usage: obj.__repr__() and returns: str