code: private void getLobLocator(CodeAssembler a, StorablePropertyInfo info) {
          if (!info.isLob()) {
              throw new IllegalArgumentException();
          }
          a.invokeInterface(TypeDesc.forClass(RawSupport.class), "getLocator",
                            TypeDesc.LONG, new TypeDesc[] {info.getStorageType()});
      }
docs: Generates code to get a Lob locator value from RawSupport. RawSupport
  instance and Lob instance must be on the stack. Result is a long locator
  value on the stack.