1141             of years and/or months (a positive number of years and months shifts
1143             It adds the years the given years and months to both begin and end.
1145             on begin and end with the given number of years and months.
1149                 months        = The number of months to shift the interval by.
1170         void shift(T)(T years, T months = 0, AllowDayOverflow allowOverflow = AllowDayOverflow.yes)
1179             begin.add!"months"(months, allowOverflow);
1181             end.add!"months"(months, allowOverflow);
1267             it subtracts the given number of months/years from `begin` and
1273                 months        = The number of months to expand the interval by.
1296                        T months = 0,
1311                     begin.add!"months"(-months, allowOverflow);
1313                     end.add!"months"(months, allowOverflow);
1326                     end.add!"months"(months, allowOverflow);
1339                     begin.add!"months"(-months, allowOverflow);
2802         static void testIntervalFail(Interval!Date interval, int years, int months)
2804             interval.shift(years, months);
2809         static void testInterval(I)(I interval, int years, int months, AllowDayOverflow allow,  in testInterval()
2812             interval.shift(years, months, allow);  in testInterval()
2897         static void testIntervalFail(Interval!Date interval, int years, int months)
2899             interval.expand(years, months);
2905 …static void testInterval(I)(I interval, int years, int months, AllowDayOverflow allow, Direction d…  in testInterval()
2908             interval.expand(years, months, allow, dir);  in testInterval()
5175         static void testInterval(I)(I interval, int years, int months, AllowDayOverflow allow,  in testInterval()
5178             interval.shift(years, months, allow);  in testInterval()
5255         static void testInterval(I)(I interval, int years, int months, AllowDayOverflow allow,  in testInterval()
5258             interval.expand(years, months, allow);  in testInterval()
7402         static void testIntervalFail(I)(I interval, int years, int months)  in testIntervalFail()
7404             interval.shift(years, months);  in testIntervalFail()
7407         static void testInterval(I)(I interval, int years, int months, AllowDayOverflow allow,  in testInterval()
7410             interval.shift(years, months, allow);  in testInterval()
7487         static void testInterval(I)(I interval, int years, int months, AllowDayOverflow allow,  in testInterval()
7490             interval.expand(years, months, allow);  in testInterval()
7701     which would be reached by adding months to the given time point.
7948         months        = The number of months to add to the time point passed to  in func()
7958                                  int months = 0,  in func()
7964     __traits(compiles, TP.init.add!"months"(months)) &&  in func()
7974             retval.add!"months"(months, allowOverflow);  in func()
7982             retval.add!"months"(-months, allowOverflow);  in func()