AbstractJournal has RWStrategy tests where it should test on IAllocationManager

    @Override
    public void delete(final long addr, final IAllocationContext context) {

        assertCanWrite();

        if(_bufferStrategy instanceof IRWStrategy) {
        
            ((IRWStrategy) _bufferStrategy).delete(addr, context);
            
        } else {
            
            _bufferStrategy.delete(addr);
            
        }

    }
    
    @Override
    public void detachContext(final IAllocationContext context) {
        
        assertCanWrite();

        if(_bufferStrategy instanceof IRWStrategy) {

            ((IRWStrategy) _bufferStrategy).detachContext(context);
            
        }
    	
    }