Update UTypeWriter.java

Author: SentryMan

prism-core/src/main/java/io/avaje/prism/internal/UTypeWriter.java

@@ -2,8 +2,6 @@
 
 import java.io.PrintWriter;
 
-import javax.annotation.processing.Generated;
-
 public class UTypeWriter {
   private UTypeWriter() {}
 
@@ -17,6 +15,7 @@ public static void write(PrintWriter out, String packageName) {
             + "import java.util.List;\n"
             + "import java.util.Set;\n"
             + "\n"
+            + "import javax.annotation.processing.Generated;\n"
             + "import javax.lang.model.element.AnnotationMirror;\n"
             + "import javax.lang.model.type.TypeKind;\n"
             + "import javax.lang.model.type.TypeMirror;\n"