Method from

base/src/main/java/net/time4j/TemporalType.java:982–995

(Timezone time4j)

        }

        @Override
        public TimeZone from(Timezone time4j) {

            if (time4j.getHistory() == null) {
                String id = time4j.getID().canonical();
                if (id.startsWith(JUT_PROVIDER)) {
                    id = id.substring(JUT_PROVIDER.length());
                }
                return TimeZone.getTimeZone(id);
            } else {
                return new OldApiTimezone(time4j);
            }

        }

        @Override
        public Class<TimeZone> getSourceType() {