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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 add_link(self, **kwgs):
 """ Add additional link to the document. Links will be embeded only inside of this document. """

        self.links.append(kwgs)
        if kwgs.get('type') == 'text/javascript':
            if 'scripted' not in self.properties:
                self.properties.append('scripted')