OSID - osid.authentication.keys.KeyList Service Interface Definition

Interface	osid.authentication.keys.KeyList
Implements	`osid.OsidList`
Used By	`osid.authentication.keys.KeyAgencySession`
	`osid.authentication.keys.KeyLookupSession`
	`osid.authentication.keys.KeyQuerySession`
	`osid.authentication.keys.KeySearchResults`
Description	Like all `OsidLists`, `KeyList` provides a means for accessing `Key` elements sequentially either one at a time or many at a time. Examples: while (kl.hasNext()) { Key key = kl.getNextKey(); } or while (kl.hasNext()) { Key[] keys = kl.getNextKeys(kl.available()); }
Method	getNextKey
Description	Gets the next `Key` in this list.
Return	`osid.authentication.keys.Key`		the next `Key` in this list. The `hasNext()` method should be used to test that a next `Key` is available before calling this method.
Errors	ILLEGAL_STATE		no more elements available in this list
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getNextKeys
Description	Gets the next set of `Key` elements in this list which must be less than or equal to the number returned from `available()`.
Parameters	`cardinal`	`n`	the number of `Key` elements requested which should be less than or equal to `available()`
Return	`osid.authentication.keys.Key[]`		an array of `Key` elements. The length of the array is less than or equal to the number specified.
Errors	ILLEGAL_STATE		no more elements available in this list
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.