OSID - osid.financials.ActivityNode Service Interface Definition

Interface	osid.financials.ActivityNode
Implements	`osid.OsidNode`
Used By	`osid.financials.ActivityHierarchySession`
Used By	`osid.financials.ActivityNodeList`
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 `ActivityHierarchySession`.
Method	getActivity
Description	Gets the `Activity` at this node.
Return	`osid.financials.Activity`	the activity represented by this node
Compliance	`mandatory`	This method must be implemented.
Method	getParentActivityNodes
Description	Gets the parents of this activity.
Return	`osid.financials.ActivityNodeList`	the parents of this activity
Compliance	`mandatory`	This method must be implemented.
Method	getChildActivityNodes
Description	Gets the children of this activity.
Return	`osid.financials.ActivityNodeList`	the children of this activity
Compliance	`mandatory`	This method must be implemented.