src/jdk.compiler/share/classes/com/sun/tools/javac/tree/TreeCopier.java

rev 56806 : 8232684: Make switch expressions final
Reviewed-by: TBD

@@ -142,11 +142,10 @@
         JCBreak t = (JCBreak) node;
         return M.at(t.pos).Break(t.label);
     }
 
     @DefinedBy(Api.COMPILER_TREE)
-    @SuppressWarnings("preview")
     public JCTree visitYield(YieldTree node, P p) {
         JCYield t = (JCYield) node;
         JCExpression value = copy(t.value, p);
         return M.at(t.pos).Yield(value);
     }

@@ -378,11 +377,10 @@
         List<JCCase> cases = copy(t.cases, p);
         return M.at(t.pos).Switch(selector, cases);
     }
 
     @DefinedBy(Api.COMPILER_TREE)
-    @SuppressWarnings("preview")
     public JCTree visitSwitchExpression(SwitchExpressionTree node, P p) {
         JCSwitchExpression t = (JCSwitchExpression) node;
         JCExpression selector = copy(t.selector, p);
         List<JCCase> cases = copy(t.cases, p);
         return M.at(t.pos).SwitchExpression(selector, cases);