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Rotates the page by a multiple of ninety degrees.
By providing the Rotation property to this function you can
derotate a page. The Rotation property and page
bounding boxes (MediaBox, CropBox, BleedBox, TrimBox and ArtBox) will be adjusted to
reflect the new viewing orientation.
If a value is provided which is not a multiple of ninety
degrees, an exception will be raised.
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