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a/Allura/allura/model/filesystem.py b/Allura/allura/model/filesystem.py
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            original = None
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            original = None
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        thumbnail = cls.save_thumbnail(filename, image, content_type, thumbnail_size, thumbnail_meta, square)
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        thumbnail = cls.save_thumbnail(filename, image, content_type, thumbnail_size, thumbnail_meta, square)
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        return original, thumbnail
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        return original, thumbnail
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    def is_image(self):
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    def is_image(self):
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        return (self.content_type
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        return (self.content_type
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                and self.content_type.lower() in SUPPORTED_BY_PIL)
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                and self.content_type.lower() in SUPPORTED_BY_PIL)
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    @property
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    def length(self):
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        return self.rfile().length