"throw new RuntimeException("Not supported")" in many funs of RepositoryImpl.java

There are lots of funs which contains "throw new RuntimeException("Not supported")" in "org.ethereum.db.RepositoryImpl.java".
eg:
public Set getStorageKeys(byte[] addr) {
throw new RuntimeException("Not supported");
}
Is there any implemented function replacing it?

It's hardly feasible to support some methods in main repository implementation.
But they are pretty useful in tests, take a look at this implementation

ethereumj/ethereumj-core/src/test/java/org/ethereum/jsontestsuite/suite/IterableTestRepository.java

Lines 266 to 269 in 561582b

    
           @Override 
        
           public Set<DataWord> getStorageKeys(byte[] addr) { 
        
               return src.getStorageKeys(addr); 
        
           }

thanks for your reply.

	@Override
	public Set<DataWord> getStorageKeys(byte[] addr) {
	return src.getStorageKeys(addr);
	}