In general the hash fragment the GWT places framework generates consists of
two parts: a unique prefix that represents the place type and a token that
contains the serialized state of a place instance. Both are separated by a
colon.
You can use @Prefix to change the default unique prefix of a Place which is
the concrete Place class simple name, e.g. CustomerPlace.
To fill a Hyperlink target history token you would use the
PlaceHistoryMapper.getToken(new CustomerPlace(<optional state>)) method
which basically returns Prefix + ":" + tokenizer.getToken(place) .
If you don't like the colon you can also use your own logic by either
implementing the PlaceHistoryMapper interface yourself or by creating just
a single PlaceTokenizer<Place> with a prefix @Prefix(""). This tokenizer
will act as a catch-all tokenizer and you can then freely implement your
getToken() / getPlace() logic for all places inside that tokenizer. The
catch-all tokenizer is kind of a cheat, so I would prefer implementing
PlaceHistoryMapper directly.
For example my apps usually use history tokens that look like
/#!/archive/2014/august/
-- J.
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