old_contents: from .configuration import Configuration
  from girder.utility import setting_utilities
  from .constants import Features
  
  from girder.plugin import GirderPlugin
  
  @setting_utilities.validator({
      Features.NOTEBOOKS
  })
  
  class AppPlugin(GirderPlugin):
      DISPLAY_NAME = 'OpenChemistry App'
  
      def validateSettings(self, event):
          pass
  
      def load(self, info):
          info['apiRoot'].configuration = Configuration()
  
new_contents: from .configuration import Configuration
  from girder.utility import setting_utilities
  from .constants import Features
  
  from girder.plugin import GirderPlugin
  
  @setting_utilities.validator({
      Features.NOTEBOOKS
  })
  def validateSettings(event):
      pass
  
  class AppPlugin(GirderPlugin):
      DISPLAY_NAME = 'OpenChemistry App'
  
      def load(self, info):
          info['apiRoot'].configuration = Configuration()
  
subject: Put validateSettings() after girder decorator