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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 windows_from_blocksize(self, blocksize_xy=512):
 """Create rasterio.windows.Window instances with given size which fully cover the raster. Arguments: blocksize_xy {int or list of two int} -- Size of the window. If one integer is given it defines the width and height of the window. If a list of two integers if given the first defines the width and the second the height. Returns: None -- But the attributes ``windows``, ``windows_row`` and ``windows_col`` are updated. """

        meta = self._get_template_for_given_resolution(self.dst_res, "meta")
        width = meta["width"]
        height = meta["height"]
        blocksize_wins = windows_from_blocksize(blocksize_xy, width, height)

        self.windows = np.array([win[1] for win in blocksize_wins])
        self.windows_row = np.array([win[0][0] for win in blocksize_wins])
        self.windows_col = np.array([win[0][1] for win in blocksize_wins])
        return self