code: def get_matchers():
      
      from . import matchers
  
      def is_matcher_func(member):
          return inspect.isfunction(member) and member.__name__.endswith("_matcher")
  
      members = inspect.getmembers(matchers, is_matcher_func)
  
      for name, func in members:
          yield func
docs: Get matcher functions from treeherder.autoclassify.matchers
  
      We classify matchers as any function treeherder.autoclassify.matchers with
      a name ending in _matcher.  This is currently overkill but protects against
      the unwarey engineer adding new functions to the matchers module that
      shouldn't be treated as matchers.