'Reads stats values from the data store for the current process.'

def ReadStats(self, process_id=None, metric_name=None, timestamp=ALL_TIMESTAMPS, limit=10000):

    if (not process_id):
        raise ValueError("process_id    can't    be    None")
    results = self.MultiReadStats(process_ids=[process_id], metric_name=metric_name, timestamp=timestamp, limit=limit)
    try:
        return results[process_id]
    except KeyError:
        return {}
