def is_directory(self):
        return self._security_class == "dir"
Returns a 2D array of cells
dataset/ETHPy150Open seandroid-analytics/seal/sealib/device.py/File.is_directory--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/openpyxl-2.3.0-b2/openpyxl/worksheet/worksheet.py/Worksheet.get_squared_range