OSID - osid.checklist.TodoNode Service Interface Definition

Interface	osid.checklist.TodoNode
Implements	`osid.OsidNode`
Used By	`osid.checklist.TodoHierarchySession`
Used By	`osid.checklist.TodoNodeList`
Description	This interface is a container for a partial hierarchy retrieval. The number of hierarchy levels traversable through this interface depend on the number of levels requested in the `TodoHierarchySession`.
Method	getTodo
Description	Gets the `Todo` at this node.
Return	`osid.checklist.Todo`	the todo represented by this node
Compliance	`mandatory`	This method must be implemented.
Method	getParentTodoNodes
Description	Gets the parents of this todo.
Return	`osid.checklist.TodoNodeList`	the parents of this todo
Compliance	`mandatory`	This method must be implemented.
Method	getChildTodoNodes
Description	Gets the children of this todo.
Return	`osid.checklist.TodoNodeList`	the children of this todo
Compliance	`mandatory`	This method must be implemented.