$ javac --enable-preview --release 26 Lazy26.java      (JDK 26)
exit=0

$ javac --enable-preview --release 27 Lazy26.java      (JDK 27)
Lazy26.java:12: error: cannot find symbol
        if (!GREETING.isInitialized()) {
                     ^
  symbol:   method isInitialized()
  location: variable GREETING of type LazyConstant<String>
Lazy26.java:13: error: cannot find symbol
            System.out.println("not yet: " + GREETING.orElse("<unset>"));
                                                     ^
  symbol:   method orElse(String)
  location: variable GREETING of type LazyConstant<String>
2 errors
exit=1