Set the values for
        :data:`~aeneas.runtimeconfiguration.RuntimeConfiguration.TTS`
        and
        :data:`~aeneas.runtimeconfiguration.RuntimeConfiguration.TTS_PATH`
        matching the given granularity level.

        Currently supported levels:

        * ``1`` (paragraph)
        * ``2`` (sentence)
        * ``3`` (word)

        :param int level: the desired granularity level

def set_tts(self, level):
        """
        Set the values for
        :data:`~aeneas.runtimeconfiguration.RuntimeConfiguration.TTS`
        and
        :data:`~aeneas.runtimeconfiguration.RuntimeConfiguration.TTS_PATH`
        matching the given granularity level.

        Currently supported levels:

        * ``1`` (paragraph)
        * ``2`` (sentence)
        * ``3`` (word)

        :param int level: the desired granularity level
        """
        if level in self.TTS_GRANULARITY_MAP.keys():
            tts_key, tts_path_key = self.TTS_GRANULARITY_MAP[level]
            self[self.TTS] = self[tts_key]
            self[self.TTS_PATH] = self[tts_path_key]