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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 write_svg(self):
 """ Returns PUML from the system as a SVG image. Requires plantuml library. """

        import plantuml
        puml = self.write_puml()
        server = plantuml.PlantUML(url=self.url)
        svg = server.processes(puml)
        return svg