old_contents: # Licensed to the StackStorm, Inc ('StackStorm') under one or more
  # contributor license agreements.  See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You 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 st2common.models.db.pack import pack_access
  from st2common.persistence import base
  
  __all__ = [
      'Pack'
  ]
  
  
  class Pack(base.Access):
      impl = pack_access
  
      @classmethod
      def _get_impl(cls):
          return cls.impl
  
new_contents: # Licensed to the StackStorm, Inc ('StackStorm') under one or more
  # contributor license agreements.  See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You 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 st2common.models.db.pack import pack_access
  from st2common.persistence import base
  
  __all__ = [
      'Pack',
      'ConfigSchema'
  ]
  
  
  class Pack(base.Access):
      impl = pack_access
  
      @classmethod
      def _get_impl(cls):
          return cls.impl
  
  
  class ConfigSchema(base.Access):
      impl = pack_access
  
      @classmethod
      def _get_impl(cls):
          return cls.impl
  
subject: Add persistance class for ConfigSchema.