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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 unprotect(self, **kwargs):
 """Unprotect the branch. Args: **kwargs: Extra options to send to the server (e.g. sudo) Raises: GitlabAuthenticationError: If authentication is not correct GitlabProtectError: If the branch could not be unprotected """

        id = self.get_id().replace('/', '%2F')
        path = '%s/%s/unprotect' % (self.manager.path, id)
        self.manager.gitlab.http_put(path, **kwargs)
        self._attrs['protected'] = False