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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 time_estimate(self, duration, **kwargs):
 """Set an estimated time of work for the object. Args: duration (str):
 Duration in human format (e.g. 3h30) **kwargs: Extra options to send to the server (e.g. sudo) Raises: GitlabAuthenticationError: If authentication is not correct GitlabTimeTrackingError: If the time tracking update cannot be done """

        path = '%s/%s/time_estimate' % (self.manager.path, self.get_id())
        data = {'duration': duration}
        return self.manager.gitlab.http_post(path, post_data=data, **kwargs)