old_contents: """
  This module implements the alfred core system.
  
  Pylaas(<config: file|{}>)
  """
  from pylaas_core.technical.container import Container
  
  
  class PylaasCore:
      """
      Attributes:
          _container (Container) : unique instance
      """
      _container = None
  
      def __new__(cls):
          """Prevent instantiation
          """
          raise TypeError("PylaasCore class may not be instantiated")
  
      def init(cls, definitions):
          cls._container = Container()
          cls._container.add_definition(definitions)
  
      def get_container(cls):
          return cls._container
  
      def get_service(cls, service_id):
          return cls.get_container().get(service_id)
  
      init = classmethod(init)
      get_container = classmethod(get_container)
      get_service = classmethod(get_service)
  
new_contents: """
  This module implements the alfred core system.
  
  PylaasCore.init(<definitions: file|{}>)
  """
  from pylaas_core.technical.container import Container
  
  
  class PylaasCore:
      """
      Attributes:
          _container (Container) : unique instance
      """
      _container = None
  
      def __new__(cls):
          """Prevent instantiation
          """
          raise TypeError("PylaasCore class may not be instantiated")
  
      @classmethod
      def init(cls, definitions):
          """Init AlfredCore
  
          init default Container with definitions
  
          Args:
              definitions (dict): container definitions
          """
          cls._container = Container()
          cls._container.add_definition(definitions)
  
      @classmethod
      def get_container(cls):
          """Get current container
  
          Returns:
              container (ContainerInterface): current container
  
          """
          return cls._container
  
      @classmethod
      def get_service(cls, service_id):
          """Get service
  
          Args:
              service_id (string): service id to instantiate from container
  
          Returns:
              service (ServiceInterface): service instance (singletons)
  
          """
          return cls.get_container().get(service_id)
  
subject: add some docstring