Gets the number of seconds _in this duration.
!(p)
This returns the total number of whole seconds _in the duration.
!(p)
This instance is immutable and unaffected by this method call.
@return the whole seconds part of the length of the duration, positive or negative
@since 9
Gets the number of seconds _in this duration. !(p) This returns the total number of whole seconds _in the duration. !(p) This instance is immutable and unaffected by this method call.
@return the whole seconds part of the length of the duration, positive or negative @since 9