old_contents: from mopidy.outputs.base import BaseOutput
  from mopidy.utils.process import unpickle_connection
  
  class DummyOutput(BaseOutput):
      """
      Audio output used for testing.
      """
  
      #: For testing. :class:`True` if :meth:`start` has been called.
      start_called = False
  
      #: For testing. :class:`True` if :meth:`destroy` has been called.
      destroy_called = False
  
      #: For testing. Contains all messages :meth:`process_message` has received.
      messages = []
  
      #: For testing. Contains the last URI passed to :meth:`play_uri`.
      uri = None
  
      #: For testing. Contains the last capabilities passed to
      #: :meth:`deliver_data`.
      capabilities = None
  
      #: For testing. Contains the last data passed to :meth:`deliver_data`.
      data = None
  
      #: For testing. :class:`True` if :meth:`end_of_data_stream` has been
      #: called.
      end_of_data_stream_called = False
  
      #: For testing. Contains the current position.
      position = 0
  
      #: For testing. Contains the current state.
      state = 'NULL'
  
      #: For testing. Contains the current volume.
      volume = 100
  
      def start(self):
          self.start_called = True
  
      def destroy(self):
          self.destroy_called = True
  
      def process_message(self, message):
          self.messages.append(message)
  
      def play_uri(self, uri):
          self.uri = uri
          return True
  
      def deliver_data(self, capabilities, data):
          self.capabilities = capabilities
          self.data = data
  
      def end_of_data_stream(self):
          self.end_of_data_stream_called = True
  
      def get_position(self):
          return self.position
  
      def set_position(self, position):
          self.position = position
          return True
  
      def set_state(self, state):
          self.state = state
          return True
  
      def get_volume(self):
          return self.volume
  
      def set_volume(self, volume):
          self.volume = volume
          return True
  
new_contents: from mopidy.outputs.base import BaseOutput
  
  class DummyOutput(BaseOutput):
      """
      Audio output used for testing.
      """
  
      #: For testing. :class:`True` if :meth:`start` has been called.
      start_called = False
  
      #: For testing. :class:`True` if :meth:`destroy` has been called.
      destroy_called = False
  
      #: For testing. Contains all messages :meth:`process_message` has received.
      messages = []
  
      #: For testing. Contains the last URI passed to :meth:`play_uri`.
      uri = None
  
      #: For testing. Contains the last capabilities passed to
      #: :meth:`deliver_data`.
      capabilities = None
  
      #: For testing. Contains the last data passed to :meth:`deliver_data`.
      data = None
  
      #: For testing. :class:`True` if :meth:`end_of_data_stream` has been
      #: called.
      end_of_data_stream_called = False
  
      #: For testing. Contains the current position.
      position = 0
  
      #: For testing. Contains the current state.
      state = 'NULL'
  
      #: For testing. Contains the current volume.
      volume = 100
  
      def start(self):
          self.start_called = True
  
      def destroy(self):
          self.destroy_called = True
  
      def process_message(self, message):
          self.messages.append(message)
  
      def play_uri(self, uri):
          self.uri = uri
          return True
  
      def deliver_data(self, capabilities, data):
          self.capabilities = capabilities
          self.data = data
  
      def end_of_data_stream(self):
          self.end_of_data_stream_called = True
  
      def get_position(self):
          return self.position
  
      def set_position(self, position):
          self.position = position
          return True
  
      def set_state(self, state):
          self.state = state
          return True
  
      def get_volume(self):
          return self.volume
  
      def set_volume(self, volume):
          self.volume = volume
          return True
  
subject: Remove unused import