<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def summary(self, title=None, complexity=False):
 """ Generates a summary. :param title: optional title :type title: str :param complexity: whether to print the complexity information as well :type complexity: bool :return: the summary :rtype: str """

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