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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 coordinate(self):
 """Returns the maven coordinate of this jar. :rtype: :class:`pants.java.jar.M2Coordinate` """

    return M2Coordinate(org=self.org, name=self.name, rev=self.rev, classifier=self.classifier,
                        ext=self.ext)