old_contents: from yapsy import IPlugin
  from postprocessing import PostProcessedDataItem
  
  __author__ = 'aj@springlab.co'
  
  
  class ValidatedDataItem(PostProcessedDataItem):
      """
      Overrides the PostProcessedDataItem class to provide an indication that a
      PostProcessedDataItem instance has undergone validation
      """
      def __init__(self, seq=None, **kwargs):
          self.valid = False
          super(ValidatedDataItem, self).__init__(seq, **kwargs)
  
  
  class ValidationPluginInterface(IPlugin.IPlugin):
      """
      Defines an interface for a plugin that validates the processed data items
      """
  
      def can_validate(self, data_model_name, data_model):
          """
          Determines whether the plugin can validate data associated with a given data model. Returns a bool.
          """
          return False
  
      def validate(self, data_items, data_model_name, data_model):
          """
          For a given data model, processes a list of (UID value, ExtractedDataItem instance) tuples and validates
          each ExtractedDataItem instance, transforming it into a ValidatedDataItem instance in the process.
  
          Returns a list of (UID value, ValidatedDataItem instance) tuples.
          """
          return []
  
new_contents: from yapsy import IPlugin
  from postprocessing import PostProcessedDataItem
  
  __author__ = 'aj@springlab.co'
  
  
  class ValidatedDataItem(PostProcessedDataItem):
      """
      Overrides the PostProcessedDataItem class to provide an indication that a
      PostProcessedDataItem instance has undergone validation
      """
      def __init__(self, seq=None, **kwargs):
          self.valid = True
          super(ValidatedDataItem, self).__init__(seq, **kwargs)
  
  
  class ValidationPluginInterface(IPlugin.IPlugin):
      """
      Defines an interface for a plugin that validates the processed data items
      """
  
      def can_validate(self, data_model_name, data_model):
          """
          Determines whether the plugin can validate data associated with a given data model. Returns a bool.
          """
          return False
  
      def validate(self, data_items, data_model_name, data_model):
          """
          For a given data model, processes a list of (UID value, ExtractedDataItem instance) tuples and validates
          each ExtractedDataItem instance, transforming it into a ValidatedDataItem instance in the process.
  
          Returns a list of (UID value, ValidatedDataItem instance) tuples.
          """
          return []
  
subject: Set default state of ValidatedDateItem to valid.