How to use the vine.starpromise function in vine

Arguments:
            packages (List[str]): List of packages to search.
                This argument may also be a callable, in which case the
                value returned is used (for lazy evaluation).
            related_name (str): The name of the module to find.  Defaults
                to "tasks": meaning "look for 'module.tasks' for every
                module in ``packages``."
            force (bool): By default this call is lazy so that the actual
                auto-discovery won't happen until an application imports
                the default modules.  Forcing will cause the auto-discovery
                to happen immediately.
        """
        if force:
            return self._autodiscover_tasks(packages, related_name)
        signals.import_modules.connect(starpromise(
            self._autodiscover_tasks, packages, related_name,
        ), weak=False, sender=self)

Arguments:
            packages (List[str]): List of packages to search.
                This argument may also be a callable, in which case the
                value returned is used (for lazy evaluation).
            related_name (str): The name of the module to find.  Defaults
                to "tasks": meaning "look for 'module.tasks' for every
                module in ``packages``.".  If ``None`` will only try to import
                the package, i.e. "look for 'module'".
            force (bool): By default this call is lazy so that the actual
                auto-discovery won't happen until an application imports
                the default modules.  Forcing will cause the auto-discovery
                to happen immediately.
        """
        if force:
            return self._autodiscover_tasks(packages, related_name)
        signals.import_modules.connect(starpromise(
            self._autodiscover_tasks, packages, related_name,
        ), weak=False, sender=self)

def either(self, default_key, *defaults):
        """Get key from configuration or use default values.

        Fallback to the value of a configuration key if none of the
        `*values` are true.
        """
        return first(None, [
            first(None, defaults), starpromise(self.conf.get, default_key),
        ])

def either(self, default_key, *defaults):
        """Get key from configuration or use default values.

        Fallback to the value of a configuration key if none of the
        `*values` are true.
        """
        return first(None, [
            first(None, defaults), starpromise(self.conf.get, default_key),
        ])