OSID - osid.search.terms.DurationRangeTerm Service Interface Definition

Interface	osid.search.terms.DurationRangeTerm
Implements	`osid.search.QueryTerm`
Description	A term for a `Duration` range query.
Method	getDurationRangeStart
Description	Gets the start of the `Duration` range in this term.
Return	`osid.calendaring.Duration`	the duration start
Errors	ILLEGAL_STATE	`isWildcard()` is `true`
Compliance	`mandatory`	This method must be implemented.
Method	getDurationRangeEnd
Description	Gets the end of the `Duration` range in this term.
Return	`osid.calendaring.Duration`	the duration end
Errors	ILLEGAL_STATE	`isWildcard()` is `true`
Compliance	`mandatory`	This method must be implemented.