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/EntityClasses.java

@@ -53,7 +53,6 @@ import google.registry.model.tmch.TmchCrl;
 public final class EntityClasses {
 
   /** Set of entity classes. */
-  @SuppressWarnings("unchecked") // varargs
   public static final ImmutableSet<Class<? extends ImmutableObject>> ALL_CLASSES =
       ImmutableSet.of(
           AllocationToken.class,