registrations.
Also made the direct register by ID method public
so that external callers can register serializers
for specific IDs.
With these changes, it is possible for a server to
authoritatively send out a list of all registrations
to its clients greatly reducing the "registration
dependency" that exists otherwise.
git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10948 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
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