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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 extendMarkdown(self, md, md_globals):
 """ Add InlineGraphvizPreprocessor to the Markdown instance. """

        md.registerExtension(self)

        md.preprocessors.add('graphviz_block',
                             InlineGraphvizPreprocessor(md),
                             "_begin")