You should call this method when you do not need access to a node anymore. Calling it is optional - it gets automatically called by the destructor of this class - but it is recommended to call this method manually because it allows the system the release resources held by this object as soon as possible. The node object is not valid anymore after calling this method - do not call any method of the node object, or you will get an InvalidNodeException. This method does not remove the node from the scene - it just removes the connection between the EAI node object and the node in the 3D scene.