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/mark/MarkHolder.java

@@ -31,7 +31,7 @@ public class MarkHolder extends CommonMarkContactFields {
     ASSIGNEE,
 
     @XmlEnumValue("licensee")
-    LICENSEE;
+    LICENSEE
   }
 
   @XmlAttribute