code: def register_types(name, *types):
      
  
      type_names.setdefault(name, set())
      for t in types:
          # Redirecting the type
          if t in media_types:
              type_names[media_types[t]].discard(t)
  
          # Save the mapping
          media_types[t] = name
          type_names[name].add(t)
docs: Register a short name for one or more content types.