Looks like a leftover from JDK-8199925 that removed the definition, but left the declaration back.
            
- relates to
- 
                    JDK-8199925 Break out GC selection logic from GCArguments to GCConfig -           
- Resolved
 
-         
            
        
        JDK-8199925
        Break out GC selection logic from GCArguments to GCConfig
    
