def getBucketValues(self):
raise Exception("<STR_LIT>")<EOL>
**Must be overridden by subclasses.**

Returns a list of items, one for each bucket defined by this encoder.
Each item is the value assigned to that bucket, this is the same as the
:attr:`.EncoderResult.value` that would be returned by
:meth:`.getBucketInfo` for that bucket and is in the same format as the
input that would be passed to :meth:`.encode`.

This call is faster than calling :meth:`.getBucketInfo` on each bucket
individually if all you need are the bucket values.

:return: list of items, each item representing the bucket value for that
         bucket.