How to protect dynamic lookup content when it is changing?

"rsobies" <[email protected]>
Newsgroups gmane.comp.java.netbeans.modules.openide.devel
Message-ID <[email protected]>
or if getLookup.lookup(SomeKey.class) is invoked, instancontent is locked?
then i only  have to make synchronization in setNewKey
am i right?
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