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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 update_search_window(self, search_window, x_center, y_center):
 """ update the search area for the lens equation solver :param search_window: search_window: window size of the image position search with the lens equation solver. :param x_center: center of search window :param y_center: center of search window :return: updated self instances """

        self._search_window, self._x_center, self._y_center = search_window, x_center, y_center