class_docstr: The base class for all processors.
  
  Attributes:
      Processor.md: The `Markdown` instance passed in an initialization.
  
  Arguments:
      md: The `Markdown` instance this processor is a part of.
code: def __init__(self, md: Markdown | None = None):
      self.md = md
  
imports: from __future__ import annotations
  import re
  import sys
  import warnings
  from functools import wraps, lru_cache
  from itertools import count
  from typing import TYPE_CHECKING, Generic, Iterator, NamedTuple, TypeVar, TypedDict, overload
label_desc: Use image node_id 1 to create a new Processor object  with example: obj = Processor(md)