default Cookie withMutations(Consumer<CookieBuilder> mutator) {
        final CookieBuilder builder = toBuilder();
        mutator.accept(builder);
        return builder.build();
    }
Returns a new {@link Cookie} which is the result from the mutation by the specified {@link Consumer}.
This method is a shortcut for:
<pre>{@code
builder = toBuilder();
mutator.accept(builder);
return builder.build();
}</pre>

@see #toBuilder()
core/src/main/java/com/linecorp/armeria/common/Cookie.java