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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add(self, filter_or_query):
 """Add a filter, or a list of filters, to the query. If a sequence of filters is supplied, they are all added, and will be combined with an ANDFilter. If a sequence of queries is supplied, they are all added, and will be combined with an BooleanQuery(must) . """

        if isinstance(filter_or_query, Filter):
            if self.queries:
                raise QueryError("A Query is required")
            self.filters.append(filter_or_query)
        elif isinstance(filter_or_query, Query):
            if self.filters:
                raise QueryError("A Filter is required")
            self.queries.append(filter_or_query)
        else:
            for item in filter_or_query:
                self.add(item)
        return self