Get the nanoseconds part within seconds of the duration.
!(p)
The length of the duration is stored using two fields - seconds and nanoseconds.
The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to
the length _in seconds.
The total duration is defined by calling {@link #getNano()} and {@link #getSeconds()}.
!(p)
This instance is immutable and unaffected by this method call.
@return the nanoseconds within the second part of the length of the duration, from 0 to 999,999,999
@since 9
Get the nanoseconds part within seconds of the duration. !(p) The length of the duration is stored using two fields - seconds and nanoseconds. The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to the length _in seconds. The total duration is defined by calling {@link #getNano()} and {@link #getSeconds()}. !(p) This instance is immutable and unaffected by this method call.
@return the nanoseconds within the second part of the length of the duration, from 0 to 999,999,999 @since 9