old_contents: # -*- coding: utf-8 -*-
  from plone.registry import field
  from plone.server import _
  from zope.interface import Interface
  
  
  ACTIVE_AUTH_EXTRACTION_KEY = \
      'plone.server.registry.IAuthExtractionPlugins.active_plugins'
  
  
  class IAuthExtractionPlugins(Interface):
  
      active_plugins = field.List(
          title=_('Active Plugins'),
          defaultFactory=lambda: [],
          value_type=field.TextLine(
              title=_('Value')
          )
      )
  
  ACTIVE_AUTH_USER_KEY = \
      'plone.server.registry.IAuthPloneUserPlugins.active_plugins'
  
  
  class IAuthPloneUserPlugins(Interface):
  
      active_plugins = field.List(
          title='Active Plugins',
          defaultFactory=lambda: [],
          value_type=field.TextLine(
              title='Value'
          )
      )
  
  ACTIVE_LAYERS_KEY = 'plone.server.registry.ILayers.active_layers'
  
  
  class ILayers(Interface):
  
      active_layers = field.List(
          title=_('Active Layers'),
          defaultFactory=lambda: [],
          value_type=field.TextLine(
              title='Value'
          )
      )
  
new_contents: # -*- coding: utf-8 -*-
  from plone.registry import field
  from plone.server import _
  from zope.interface import Interface
  
  
  ACTIVE_AUTH_EXTRACTION_KEY = \
      'plone.server.registry.IAuthExtractionPlugins.active_plugins'
  
  
  class IAuthExtractionPlugins(Interface):
  
      active_plugins = field.List(
          title=_('Active Plugins'),
          defaultFactory=list,
          value_type=field.TextLine(
              title=_('Value')
          )
      )
  
  ACTIVE_AUTH_USER_KEY = \
      'plone.server.registry.IAuthPloneUserPlugins.active_plugins'
  
  
  class IAuthPloneUserPlugins(Interface):
  
      active_plugins = field.List(
          title='Active Plugins',
          defaultFactory=list,
          value_type=field.TextLine(
              title='Value'
          )
      )
  
  ACTIVE_LAYERS_KEY = 'plone.server.registry.ILayers.active_layers'
  
  
  class ILayers(Interface):
  
      active_layers = field.List(
          title=_('Active Layers'),
          defaultFactory=list,
          value_type=field.TextLine(
              title='Value'
          )
      )
  
subject: Fix default value factories