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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 class_details(self, title=None):
 """ Generates the class details. :param title: optional title :type title: str :return: the details :rtype: str """

        if title is None:
            return javabridge.call(
                self.jobject, "toClassDetailsString", "()Ljava/lang/String;")
        else:
            return javabridge.call(
                self.jobject, "toClassDetailsString", "(Ljava/lang/String;)Ljava/lang/String;", title)