new_contents: # -*- coding: utf-8 -*-
  # Copyright 2017 New Vector Ltd
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from synapse.util.module_loader import load_module
  
  from ._base import Config
  
  from distutils.util import strtobool
  
  
  class GroupsConfig(Config):
      def read_config(self, config):
          self.enable_group_creation = config.get("enable_group_creation", False)
          self.group_creation_prefix = config.get("group_creation_prefix", "")
  
      def default_config(self, **kwargs):
          return """\
          # Whether to allow non server admins to create groups on this server
          enable_group_creation: false
  
          # If enabled, non server admins can only create groups with local parts
          # starting with this prefix
          # group_creation_prefix: "unofficial/"
          """
  
subject: Add missing file...