class_docstr: Use a dict to alter specific facet values
  
  Parameters
  ----------
  lookup : dict
      A dict of the one of the forms
        - {facet_value: label_value}
        - {facet_value: callable(<label_value>)}
code: def __init__(
      self, lookup: dict[str, str] | dict[str, Callable[[str], str]]
  ):
      self.lookup = lookup
  
imports: from __future__ import annotations
  import typing
  from abc import ABCMeta, abstractmethod
  from ..exceptions import PlotnineError
label_desc: Use image node_id 1 to create a new _dict_labeller object from inherited base classes: _core_labeller with example: obj = _dict_labeller(lookup)