OSID - osid.checklist.Todo Service Interface Definition

Interface	osid.checklist.Todo
Implements	`osid.OsidObject`
	`osid.Containable`
	`osid.Temporal`
	`osid.Federateable`
Description	A `Todo` represents a checklist item. A Todo is `Temporal` that may go into effect at a future date or expired when no longer applicable, skipped, or completed.
Method	isComplete
Description	Tests if this todo has been checked off.
Return	`boolean`		`true` if this todo is complete, `false` if not complete
Compliance	`mandatory`		This method must be implemented.
Method	getPriority
Description	Gets a priority of this item.
Return	`osid.type.Type`		a priority type
Compliance	`mandatory`		This method must be implemented.
Method	getDueDate
Description	Gets the due date.
Return	`osid.calendaring.DateTime`		a date
Compliance	`mandatory`		This method must be implemented.
Method	getDependencyIds
Description	Gets a list of todo `Ids` on which this todo is dependent.
Return	`osid.id.IdList`		a list of todo `Ids`
Compliance	`mandatory`		This method must be implemented.
Method	getDependencies
Description	Gets a list of todos on which this todo is dependent.
Return	`osid.checklist.TodoList`		a list of todos
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getTodoRecord
Description	Gets the todo record corresponding to the given `Todo` record `Type.` This method is used to retrieve an object implementing the requested record. The `todoRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(todoRecordType)` is `true` .
Parameters	`osid.type.Type`	`todoRecordType`	the type of todo record to retrieve
Return	`osid.checklist.records.TodoRecord`		the todo record
Errors	NULL_ARGUMENT		`todoRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(todoRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.