          module = import_module(mod)
          return getattr(module, ttl)
  
      @staticmethod
      def get_available_extractors(extractor_type, add_none=False):
          """ Return a list of available extractors of the given type
  
          Parameters
          ----------
          extractor_type: {'aligner', 'detector', 'masker'}
 
</s> remove         extractors = sorted(item.name.replace(".py", "").replace("_", "-")
                            for item in os.scandir(extractpath)
                            if not item.name.startswith("_")
                            and not item.name.endswith("defaults.py")
                            and item.name.endswith(".py"))
 </s> add         extractors = [item.name.replace(".py", "").replace("_", "-")
                      for item in os.scandir(extractpath)
                      if not item.name.startswith("_")
                      and not item.name.endswith("defaults.py")
                      and item.name.endswith(".py")]
        if extend_plugin and extractor_type == "mask" and "bisenet-fp" in extractors:
            extractors.remove("bisenet-fp")
            extractors.extend(["bisenet-fp-face", "bisenet-fp-head"])

        extractors = sorted(extractors) </s> remove #: lib/cli/args.py:468 lib/cli/args.py:478 lib/cli/args.py:491
#: lib/cli/args.py:505 lib/cli/args.py:737 lib/cli/args.py:751
#: lib/cli/args.py:764 lib/cli/args.py:778
 </s> add #: lib/cli/args.py:471 lib/cli/args.py:481 lib/cli/args.py:494
#: lib/cli/args.py:508 lib/cli/args.py:749 lib/cli/args.py:763
#: lib/cli/args.py:776 lib/cli/args.py:790 </s> remove #: tools/mask/cli.py:101 tools/mask/cli.py:108 tools/mask/cli.py:121
#: tools/mask/cli.py:134 tools/mask/cli.py:143
 </s> add #: tools/mask/cli.py:104 tools/mask/cli.py:111 tools/mask/cli.py:124
#: tools/mask/cli.py:137 tools/mask/cli.py:146 </s> remove #: lib/cli/args.py:456
 </s> add #: lib/cli/args.py:459
    def get_available_extractors(extractor_type, add_none=False, extend_plugin=False):
          module = import_module(mod)
          return getattr(module, ttl)
  
      @staticmethod
    def get_available_extractors(extractor_type, add_none=False, extend_plugin=False):
          """ Return a list of available extractors of the given type
  
          Parameters
          ----------
          extractor_type: {'aligner', 'detector', 'masker'}
keep keep keep keep replace keep keep keep keep keep
 Masks updates
  - Add head centering support to training
  - Update helptext/tooltips 
plugins/plugin_loader.py