Implement base Duration API

[Clockwork-Muse]

• Duration abs() Returns a copy of this duration with a positive length.
• Delayed to meta Temporal addTo​(Temporal temporal) Adds this duration to the specified temporal object.
• Delayed to meta static Duration between​(Temporal startInclusive, Temporal endExclusive) Obtains a Duration representing the duration between two temporal objects.~ - Delayed to meta
• int compareTo​(Duration otherDuration) Compares this duration to the specified Duration. - Using comparison operators
• Duration dividedBy​(long divisor) Returns a copy of this duration divided by the specified value.
• long dividedBy​(Duration divisor) Returns number of whole times a specified Duration occurs within this Duration.
• boolean equals​(Object otherDuration) Checks if this duration is equal to the specified Duration.
• Delayed to meta static Duration from​(TemporalAmount amount) Obtains an instance of Duration from a temporal amount.
• Delayed to metalong get​(TemporalUnit unit) Gets the value of the requested unit.
• int getNano() Gets the number of nanoseconds within the second in this duration.
• long getSeconds() Gets the number of seconds in this duration.
• Delayed to meta List<TemporalUnit> getUnits() Gets the set of units supported by this duration.
• int hashCode() A hash code for this duration. - Auto derived
• boolean isNegative() Checks if this duration is negative, excluding zero. - Ignoring in favor of comparison operators
• boolean isZero() Checks if this duration is zero length. - Ignoring in favor of comparison operators
• Delayed to meta Duration minus​(long amountToSubtract, TemporalUnit unit) Returns a copy of this duration with the specified duration subtracted.
• Duration minus​(Duration duration) Returns a copy of this duration with the specified duration subtracted.
• Duration minusDays​(long daysToSubtract) Returns a copy of this duration with the specified duration in standard 24 hour days subtracted.
• Duration minusHours​(long hoursToSubtract) Returns a copy of this duration with the specified duration in hours subtracted.
• Duration minusMillis​(long millisToSubtract) Returns a copy of this duration with the specified duration in milliseconds subtracted.
• Duration minusMinutes​(long minutesToSubtract) Returns a copy of this duration with the specified duration in minutes subtracted.
• Duration minusNanos​(long nanosToSubtract) Returns a copy of this duration with the specified duration in nanoseconds subtracted.
• Duration minusSeconds​(long secondsToSubtract) Returns a copy of this duration with the specified duration in seconds subtracted.
• Duration multipliedBy​(long multiplicand) Returns a copy of this duration multiplied by the scalar.
• Duration negated() Returns a copy of this duration with the length negated.
• Delayed to meta static Duration of​(long amount, TemporalUnit unit) Obtains a Duration representing an amount in the specified unit.
• static Duration ofDays​(long days) Obtains a Duration representing a number of standard 24 hour days.
• static Duration ofHours​(long hours) Obtains a Duration representing a number of standard hours.
• static Duration ofMillis​(long millis) Obtains a Duration representing a number of milliseconds.
• static Duration ofMinutes​(long minutes) Obtains a Duration representing a number of standard minutes.
• static Duration ofNanos​(long nanos) Obtains a Duration representing a number of nanoseconds.
• static Duration ofSeconds​(long seconds) Obtains a Duration representing a number of seconds.
• static Duration ofSeconds​(long seconds, long nanoAdjustment) Obtains a Duration representing a number of seconds and an adjustment in nanoseconds.
• static Duration parse​(CharSequence text) Obtains a Duration from a text string such as PnDTnHnMn.nS.
• Delayed to meta Duration plus​(long amountToAdd, TemporalUnit unit) Returns a copy of this duration with the specified duration added.
• Duration plus​(Duration duration) Returns a copy of this duration with the specified duration added.
• Duration plusDays​(long daysToAdd) Returns a copy of this duration with the specified duration in standard 24 hour days added.
• Duration plusHours​(long hoursToAdd) Returns a copy of this duration with the specified duration in hours added.
• Duration plusMillis​(long millisToAdd) Returns a copy of this duration with the specified duration in milliseconds added.
• Duration plusMinutes​(long minutesToAdd) Returns a copy of this duration with the specified duration in minutes added.
• Duration plusNanos​(long nanosToAdd) Returns a copy of this duration with the specified duration in nanoseconds added.
• Duration plusSeconds​(long secondsToAdd) Returns a copy of this duration with the specified duration in seconds added.
• Delayed to meta Temporal subtractFrom​(Temporal temporal) Subtracts this duration from the specified temporal object.
• long toDays() Gets the number of days in this duration.
• long toDaysPart() Extracts the number of days in the duration.
• long toHours() Gets the number of hours in this duration.
• int toHoursPart() Extracts the number of hours part in the duration.
• long toMillis() Converts this duration to the total length in milliseconds.
• int toMillisPart() Extracts the number of milliseconds part of the duration.
• long toMinutes() Gets the number of minutes in this duration.
• int toMinutesPart() Extracts the number of minutes part in the duration.
• long toNanos() Converts this duration to the total length in nanoseconds expressed as a long.
• int toNanosPart() Get the nanoseconds part within seconds of the duration.
• long toSeconds() Gets the number of seconds in this duration.
• int toSecondsPart() Extracts the number of seconds part in the duration.
• String toString() A string representation of this duration using ISO-8601 seconds based representation, such as PT8H6M12.345S.
• Delayed to meta Duration truncatedTo​(TemporalUnit unit) Returns a copy of this Duration truncated to the specified unit.
• Duration withNanos​(int nanoOfSecond) Returns a copy of this duration with the specified nano-of-second.
• Duration withSeconds​(long seconds) Returns a copy of this duration with the specified amount of seconds.