Method withValue

base/src/main/java/net/time4j/Weekmodel.java:1871–1890

(
            T context,
            Integer value,
            boolean lenient
        )

        }

        @Override
        public T withValue(
            T context,
            Integer value,
            boolean lenient
        ) {

            PlainDate date = context.get(CALENDAR_DATE);

            if ((value == null) || (!lenient && !this.isValid(context, value))) {
                throw new IllegalArgumentException(
                    "Invalid value: " + value + " (context=" + context + ")");
            }

            return context.with(
                CALENDAR_DATE,
                this.setWeek(date, value.intValue())
            );

        }

        private int getWeek(PlainDate date) {