def __init__(self, paths, cache=False, extensions=None):
        self.extensions = extensions or []
        self.env = self._make_env(paths)
Walk through the message parts, taking the first text/plain.
dataset/ETHPy150Open SmartTeleMax/iktomi/iktomi/templates/jinja2/__init__.py/TemplateEngine.__init__--crossover with--dataset/ETHPy150Open rapidsms/rapidsms-core-dev/lib/rapidsms/backends/email.py/get_message_body