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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 query(self):
 """The SQLAlchemy query for the view. Override this to customize the query to fetch items in this view. By default, this applies the filter from the view's `authorization` and the query options from `base_query_options` and `query_options`. """

        query = self.query_raw
        query = self.authorization.filter_query(query, self)
        query = query.options(
            *itertools.chain(self.base_query_options, self.query_options)
        )

        return query