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

Interface	osid.search.terms.DistanceTerm
Implements	`osid.search.QueryTerm`
Used By	`osid.configuration.ValueQueryInspector`
Description	A term for a `Distance` query.
Method	getDistance
Description	Gets the `Distance` in this term.
Return	`osid.mapping.Distance`	the distance
Errors	ILLEGAL_STATE	`isWildcard()` is `true`
Compliance	`mandatory`	This method must be implemented.