OSID - osid.grading.GradebookNode Service Interface Definition

Interface	osid.grading.GradebookNode
Implements	`osid.OsidNode`
Used By	`osid.grading.GradebookHierarchySession`
Used By	`osid.grading.GradebookNodeList`
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 `GradebookHierarchySession`.
Method	getGradebook
Description	Gets the `Gradebook` at this node.
Return	`osid.grading.Gradebook`	the gradebook represented by this node
Compliance	`mandatory`	This method must be implemented.
Method	getParentGradebookNodes
Description	Gets the parents of this gradebook.
Return	`osid.grading.GradebookNodeList`	the parents of the `id`
Compliance	`mandatory`	This method must be implemented.
Method	getChildGradebookNodes
Description	Gets the children of this gradebook.
Return	`osid.grading.GradebookNodeList`	the children of this gradebook
Compliance	`mandatory`	This method must be implemented.