old_contents: import sieve.grammar
  
  __all__ = ('SieveTestRule',)
  
  # section 5.10
  class SieveTestTrue(sieve.grammar.Test):
  
      RULE_IDENTIFIER = 'TRUE'
  
      def __init__(self, arguments=None, tests=None):
          super(SieveTestTrue, self).__init__(arguments, tests)
          self.validate_arguments()
          self.validate_tests_size(0)
  
      def evaluate(self, message, state):
          return True
  
  SieveTestTrue.register()
  
new_contents: import sieve.grammar
  
  __all__ = ('SieveTestTrue',)
  
  # section 5.10
  class SieveTestTrue(sieve.grammar.Test):
  
      RULE_IDENTIFIER = 'TRUE'
  
      def __init__(self, arguments=None, tests=None):
          super(SieveTestTrue, self).__init__(arguments, tests)
          self.validate_arguments()
          self.validate_tests_size(0)
  
      def evaluate(self, message, state):
          return True
  
  SieveTestTrue.register()
  
subject: fix __all__ typo