Fix some statically detected code issues

This includes: unnecessary semicolons, suppress warnings, switch statements, final/private qualifiers, Optional wrapping, conditionals, both inline and non-inline variables, ternaries, Collection putAll() calls, StringBuilders, and throws declarations.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=244182539

java/google/registry/model/domain/rgp/RestoreCommand.java

@@ -28,7 +28,7 @@ public class RestoreCommand {
     REQUEST,
 
     @XmlEnumValue("report")
-    REPORT;
+    REPORT
   }
 
   /** The restore operation. */