def add_filter_set(self, filter_name, filter_set, cached=True):
        """
        Manual addition of filter set
        :param filter_name: str
        :param filter_set: list
        :param cached: bool
        """
        try:
            hash(filter_name)
        except TypeError as err:
            raise ValueError('Filter set name must be as instance of hashable type: %s' % str(err))

        if not isinstance(filter_set, list):
            raise ValueError('Filters must be a list.')

        if len(filter_set) == 0:
            raise ValueError('Filters count must be greater than 0.')

        for filter_instance in filter_set:
            if not isinstance(filter_instance, ImagineFilterInterface):
                raise ValueError('All filters must implement of ImagineFilterInterface.')

        if not isinstance(cached, bool):
            raise ValueError('Cached parameter must be a bool.')

        filter_config = {
            'filters': filter_set,
            'cached': cached
        }

        if filter_name not in self._filter_sets:
            self._filter_sets.update({filter_name: filter_config})
        else:
            raise ValueError('Duplicate filter set name.')
Manual addition of filter set
        :param filter_name: str
        :param filter_set: list
        :param cached: bool