Checks if the year is a leap year, as defined by the calendar system.
!(p)
A leap-year is a year of a longer length than normal.
The exact meaning is determined by the chronology with the constraint that
a leap-year must imply a year-length longer than a non leap-year.
!(p)
This implementation uses {@link Chronology#isLeapYear(long)}.
@return true if this date is _in a leap year, false otherwise
Checks if the year is a leap year, as defined by the calendar system. !(p) A leap-year is a year of a longer length than normal. The exact meaning is determined by the chronology with the constraint that a leap-year must imply a year-length longer than a non leap-year. !(p) This implementation uses {@link Chronology#isLeapYear(long)}.
@return true if this date is _in a leap year, false otherwise