OSID - osid.ontology.OntologyNode Service Interface Definition

Interface	osid.ontology.OntologyNode
Implements	`osid.OsidNode`
Used By	`osid.ontology.OntologyHierarchySession`
Used By	`osid.ontology.OntologyNodeList`
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 `OntologyHierarchySession`.
Method	getOntology
Description	Gets the `Ontology` at this node.
Return	`osid.ontology.Ontology`	the ontology represented by this node
Compliance	`mandatory`	This method must be implemented.
Method	getParentOntologyNodes
Description	Gets the parents of this ontology.
Return	`osid.ontology.OntologyNodeList`	the parents of the `id`
Compliance	`mandatory`	This method must be implemented.
Method	getChildOntologyNodes
Description	Gets the children of this ontology.
Return	`osid.ontology.OntologyNodeList`	the children of this ontology
Compliance	`mandatory`	This method must be implemented.