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/launch/LaunchCreateExtension.java

@@ -72,7 +72,7 @@ public class LaunchCreateExtension extends LaunchExtension implements CommandExt
      * uses a "first-come, first-served" model.
      */
     @XmlEnumValue("registration")
-    REGISTRATION;
+    REGISTRATION
   }
 
   @XmlAttribute