def get_payee_channel(channelidentifiers_to_channels, transfer_pair):
    """ Returns the payee channel of a given transfer pair. """
    payee_channel_identifier = transfer_pair.payee_transfer.balance_proof.channel_address
    assert payee_channel_identifier in channelidentifiers_to_channels
    payee_channel = channelidentifiers_to_channels[payee_channel_identifier]

    return payee_channel