Returns a copy of this period with the specified period subtracted.
!(p)
This operates separately on the years, months and days.
No normalization is performed.
!(p)
For example, "1 year, 6 months and 3 days" minus "2 years, 2 months and 2 days"
returns "-1 years, 4 months and 1 day".
!(p)
The specified amount is typically an instance of {@code Period}.
Other types are interpreted using {@link Period#from(TemporalAmount)}.
!(p)
This instance is immutable and unaffected by this method call.
@param amountToSubtract the amount to subtract, not null
@return a {@code Period} based on this period with the requested period subtracted, not null
@throws DateTimeException if the specified amount has a non-ISO chronology or
contains an invalid unit
@throws ArithmeticException if numeric overflow occurs
Returns a copy of this period with the specified period subtracted. !(p) This operates separately on the years, months and days. No normalization is performed. !(p) For example, "1 year, 6 months and 3 days" minus "2 years, 2 months and 2 days" returns "-1 years, 4 months and 1 day". !(p) The specified amount is typically an instance of {@code Period}. Other types are interpreted using {@link Period#from(TemporalAmount)}. !(p) This instance is immutable and unaffected by this method call.
@param amountToSubtract the amount to subtract, not null @return a {@code Period} based on this period with the requested period subtracted, not null @throws DateTimeException if the specified amount has a non-ISO chronology or contains an invalid unit @throws ArithmeticException if numeric overflow occurs