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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 require_session_started(func):
 """Check if API sessions are started and start them if not """

    @functools.wraps(func)
    def inner_func(self, *pargs, **kwargs):
        if not self.session_started:
            logger.info('Starting session for required meta method')
            self.start_session()
        return func(self, *pargs, **kwargs)
    return inner_func