[200611281900]
Project with sources is available in @netbeans.czech.sun.com:/cvs/retouche cvs,
module codeviation . Source are available in pant/src/ folder.

I tried to rename org/netbeans/metrics/Interval to PositionInterval. 

A exception was thrown.
java.lang.NullPointerException
        at com.sun.tools.javac.code.Types$UnaryVisitor.visit(Types.java:3206)
        at com.sun.tools.javac.code.Types$Subst.subst(Types.java:1932)
        at com.sun.tools.javac.code.Types$Subst.visitMethodType(Types.java:1955)
        at com.sun.tools.javac.code.Types$Subst.visitMethodType(Types.java:1909)
        at com.sun.tools.javac.code.Type$MethodType.accept(Type.java:791)
        at com.sun.tools.javac.code.Types$UnaryVisitor.visit(Types.java:3206)
...
caused by: org.openide.util.Exceptions$AnnException: An error occurred during
parsing of
'/home/pzajac/cvss/osobni/pant/src/org/netbeans/metrics/javac/SVUsageItem.java'.
Please report a bug against java/source and attach dump file
'/home/pzajac/.netbeans/dev/var/log/SVUsageItem.dump'.
        at
org.openide.util.Exceptions$AnnException.findOrCreate(Exceptions.java:191)
        at org.openide.util.Exceptions.attachMessage(Exceptions.java:56)
        at org.netbeans.api.java.source.JavaSource.dumpSource(JavaSource.java:1673)
        at org.netbeans.api.java.source.JavaSource.moveToPhase(JavaSource.java:877)
        ... 12 more
ALL [null]: An error occurred during parsing of
'/home/pzajac/cvss/osobni/pant/src/org/netbeans/metrics/javac/SVUsageItem.java'.
Please report a bug against java/source and attach dump file
'/home/pzajac/.netbeans/dev/var/log/SVUsageItem.dump'.
SEVERE [org.openide.util.RequestProcessor]
java.lang.RuntimeException
        at
org.netbeans.modules.refactoring.java.plugins.JavaRefactoringPlugin.processFiles(JavaRefactoringPlugin.java:127)
        at
org.netbeans.modules.refactoring.java.plugins.RenameRefactoringPlugin.prepare(RenameRefactoringPlugin.java:404)
        at
org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:329)