Invokes the mod-host process.

        mod-host requires JACK to be running.
        mod-host does not startup JACK automatically, so you need to start it before running mod-host.

        .. note::

            This function is experimental. There is no guarantee that the process will actually be initiated.

def start(self):
        """
        Invokes the mod-host process.

        mod-host requires JACK to be running.
        mod-host does not startup JACK automatically, so you need to start it before running mod-host.

        .. note::

            This function is experimental. There is no guarantee that the process will actually be initiated.
        """
        if self.address != 'localhost':
            raise ModHostError('The host configured in the constructor isn''t "localhost". '
                               'It is not possible to start a process on another device.')

        try:
            subprocess.call([self.process, '-p', str(self.port)])

        except FileNotFoundError as e:
            exception = ModHostError(
                'mod-host not found. Did you install it? '
                '(https://github.com/moddevices/mod-host#building)'
            )

            raise exception from e

        self._started_with_this_api = True