MemoryPersistenceAdapter.html was not found on this server

Hi,
I am looking for informations about MemoryPersistenceAdapter.
The html page http://activemq.apache.org/persistence.html is dedicated for
that purpose but the link <memoryPersistenceAdapter> at :
This will make the broker use the <memoryPersistenceAdapter>
goes to :
The requested URL
/maven/activemq-core/apidocs/org/apache/activemq/store/memory/MemoryPersistenceAdapter.html
was not found on this server.

Could you give me another link to get information or correct it in the
apache site ?

Thanks by advance,
DT