47          ElementType.PACKAGE,
 48          ElementType.MODULE,
 49          ElementType.TYPE})
 50  // CLASS retention will hopefully be sufficient for the purposes at hand
 51 @Retention(RetentionPolicy.CLASS)
 52 // *Not* @Documented
 53 public @interface PreviewFeature {
 54     /**
 55      * Name of the preview feature the annotated API is associated
 56      * with.
 57      */
 58     public Feature feature();
 59 
 60     public boolean reflective() default false;
 61 
 62     /**
 63      * Enum of preview features in the current release.
 64      * Values should be annotated with the feature's {@code JEP}.
 65      */
 66     public enum Feature {
 67         // not used
 68         VIRTUAL_THREADS,
 69         @JEP(number=442, title="Foreign Function & Memory API", status="Third Preview")
 70         FOREIGN,

 71         @JEP(number=430, title="String Templates")
 72         STRING_TEMPLATES,
 73         @JEP(number=443, title="Unnamed Patterns and Variables")
 74         UNNAMED,
 75         @JEP(number=445, title="Unnamed Classes and Instance Main Methods")
 76         UNNAMED_CLASSES,
 77         @JEP(number=446, title="Scoped Values", status="Preview")
 78         SCOPED_VALUES,
 79         @JEP(number=453, title="Structured Concurrency", status="Preview")
 80         STRUCTURED_CONCURRENCY,
 81         /**
 82          * A key for testing.
 83          */
 84         @JEP(number=0, title="Test Feature")
 85         TEST,
 86         ;
 87     }
 88 
 89     /**
 90      * Annotation identifying the JEP associated with a preview feature.

 47          ElementType.PACKAGE,
 48          ElementType.MODULE,
 49          ElementType.TYPE})
 50  // CLASS retention will hopefully be sufficient for the purposes at hand
 51 @Retention(RetentionPolicy.CLASS)
 52 // *Not* @Documented
 53 public @interface PreviewFeature {
 54     /**
 55      * Name of the preview feature the annotated API is associated
 56      * with.
 57      */
 58     public Feature feature();
 59 
 60     public boolean reflective() default false;
 61 
 62     /**
 63      * Enum of preview features in the current release.
 64      * Values should be annotated with the feature's {@code JEP}.
 65      */
 66     public enum Feature {
 67         // not used, but required for interim javac to not warn.
 68         VIRTUAL_THREADS,

 69         FOREIGN,
 70 
 71         @JEP(number=430, title="String Templates")
 72         STRING_TEMPLATES,
 73         @JEP(number=443, title="Unnamed Patterns and Variables")
 74         UNNAMED,
 75         @JEP(number=445, title="Unnamed Classes and Instance Main Methods")
 76         UNNAMED_CLASSES,
 77         @JEP(number=446, title="Scoped Values", status="Preview")
 78         SCOPED_VALUES,
 79         @JEP(number=453, title="Structured Concurrency", status="Preview")
 80         STRUCTURED_CONCURRENCY,
 81         /**
 82          * A key for testing.
 83          */
 84         @JEP(number=0, title="Test Feature")
 85         TEST,
 86         ;
 87     }
 88 
 89     /**
 90      * Annotation identifying the JEP associated with a preview feature.