OSID - osid.hierarchy.Hierarchy Service Interface Definition

Interface	osid.hierarchy.Hierarchy
Implements	`osid.OsidCatalog`
Description	A `Hierarchy` represents an authenticatable identity. Like all OSID objects, a `Hierarchy` is identified by its Id and any persisted references should use the Id.
Method	getHierarchyRecord
Description	Gets the hierarchy record corresponding to the given `Hierarchy` record `Type.` This method is used to retrieve an object implementing the requested record. The `hierarchyRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(hierarchyRecordType)` is `true` .
Parameters	`osid.type.Type`	`hierarchyRecordType`	the type of the record to retrieve
Return	`osid.hierarchy.records.HierarchyRecord`		the hierarchy record
Errors	NULL_ARGUMENT		`hierarchyRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(hierarchyrecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.