code: def ResolvePrefix(self, subject, attribute_prefix, timestamp=None,
                      limit=None):
      
      for _, values in self.MultiResolvePrefix([subject],
                                               attribute_prefix,
                                               timestamp=timestamp,
                                               limit=limit):
        values.sort(key=lambda a: a[0])
        return values
  
      return []
docs: Retrieve a set of value matching for this subject's attribute.
  
      Args:
        subject: The subject that we will search.
        attribute_prefix: The attribute prefix.
        timestamp: A range of times for consideration (In microseconds). Can be a
          constant such as ALL_TIMESTAMPS or NEWEST_TIMESTAMP or a tuple of ints
          (start, end).
        limit: The number of results to fetch.
  
      Returns:
         A list of (attribute, value string, timestamp).
  
         Values with the same attribute (happens when timestamp is not
         NEWEST_TIMESTAMP, but ALL_TIMESTAMPS or time range) are guaranteed
         to be ordered in the decreasing timestamp order.
  
      Raises:
        AccessError: if anything goes wrong.