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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 extentSearch(self, xmin, ymin, xmax, ymax):
 """Filters the data by a geographical bounding box. The bounding box is given as lower left point coordinates and upper right point coordinates. Note: It's necessary that the dataframe has a `lat` and `lng` column in order to apply the filter. Check if the method could be removed in the future. (could be done via freeSearch) Returns ------- list: A list containing all indexes with filtered data. Matches will be `True`, the remaining items will be `False`. If the dataFrame is empty, an empty list will be returned. """

        if not self._dataFrame.empty:
            try:
                questionMin = (self._dataFrame.lat >= xmin) & (
                    self._dataFrame.lng >= ymin)
                questionMax = (self._dataFrame.lat <= xmax) & (
                    self._dataFrame.lng <= ymax)
                return np.logical_and(questionMin, questionMax)
            except AttributeError:
                return []
        else:
            return []