code: def _convert_validator_spec(key, conv):
      if isinstance(conv, list):
          ignorecase = isinstance(conv, _ignorecase)
          return ValidateInStrings(key, conv, ignorecase=ignorecase)
      else:
          return conv
  
imports: import ast
  from functools import lru_cache, reduce
  from numbers import Real
  import operator
  import os
  import re
  import numpy
  from matplotlib import _api, cbook
  from matplotlib.cbook import ls_mapper
  from matplotlib.colors import Colormap, is_color_like
  from matplotlib._fontconfig_pattern import parse_fontconfig_pattern
  from matplotlib._enums import JoinStyle, CapStyle
  from cycler import Cycler, cycler
label_desc: Use image node_id 41 for calling a global function with example usage: _convert_validator_spec(key, conv) and returns: ValidateInStrings, conv