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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 diff(self, **kwargs):
 """Generate the commit diff. Args: **kwargs: Extra options to send to the server (e.g. sudo) Raises: GitlabAuthenticationError: If authentication is not correct GitlabGetError: If the diff could not be retrieved Returns: list: The changes done in this commit """

        path = '%s/%s/diff' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)