code: def fontLibValidator(value):
      """
      Check the validity of the lib.
      Version 3+ (though it's backwards compatible with UFO 1 and UFO 2).
  
      >>> lib = {"foo" : "bar"}
      >>> fontLibValidator(lib)
      (True, None)
  
      >>> lib = {"public.awesome" : "hello"}
      >>> fontLibValidator(lib)
      (True, None)
  
      >>> lib = {"public.glyphOrder" : ["A", "C", "B"]}
      >>> fontLibValidator(lib)
      (True, None)
  
      >>> lib = "hello"
      >>> valid, msg = fontLibValidator(lib)
      >>> valid
      False
      >>> print(msg)  # doctest: +ELLIPSIS
      The lib data is not in the correct format: expected a dictionary, ...
  
      >>> lib = {1: "hello"}
      >>> valid, msg = fontLibValidator(lib)
      >>> valid
      False
      >>> print(msg)
      The lib key is not properly formatted: expected str, found int: 1
  
      >>> lib = {"public.glyphOrder" : "hello"}
      >>> valid, msg = fontLibValidator(lib)
      >>> valid
      False
      >>> print(msg)  # doctest: +ELLIPSIS
      public.glyphOrder is not properly formatted: expected list or tuple,...
  
      >>> lib = {"public.glyphOrder" : ["A", 1, "B"]}
      >>> valid, msg = fontLibValidator(lib)
      >>> valid
      False
      >>> print(msg)  # doctest: +ELLIPSIS
      public.glyphOrder is not properly formatted: expected str,...
      """
      if not isDictEnough(value):
          reason = (
              "expected a dictionary, found %s" % type(value).__name__
          )
          return False, _bogusLibFormatMessage % reason
      for key, value in value.items():
          if not isinstance(key, str):
              return False, (
                  "The lib key is not properly formatted: expected str, found %s: %r"
                  % (type(key).__name__, key)
              )
          # public.glyphOrder
          if key == "public.glyphOrder":
              bogusGlyphOrderMessage = (
                  "public.glyphOrder is not properly formatted: %s"
              )
              if not isinstance(value, (list, tuple)):
                  reason = (
                      "expected list or tuple, found %s"
                      % type(value).__name__
                  )
                  return False, bogusGlyphOrderMessage % reason
              for glyphName in value:
                  if not isinstance(glyphName, str):
                      reason = (
                          "expected str, found %s"
                          % type(glyphName).__name__
                      )
                      return False, bogusGlyphOrderMessage % reason
      return True, None
  
imports: import calendar
  from io import open
  import fs.base
  import fs.osfs
  from collections.abc import Mapping
  from fontTools.ufoLib.utils import numberTypes
label_desc: Use image node_id 45 for calling a global function with example usage: fontLibValidator(value) and returns: True,  None, False,  unknown, False,  unknown, False,  unknown, False,  unknown