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BFSBase.getAttribute always accesses MultiFileObject.attrAskedFileObject field to allow passing of correct fileobject parameter if the attribute is defiend by methodvalue using a method with FO param. This is not very common and takes 50% in this method call so we should avoid it.
I observed this when I profiled popup menu that reads actions from layers.
core/startup/src/org/netbeans/core/startup/layers/BinaryFS.java,v1.12