DocumentPlanTopology(Level, Phase) Property

public PlanTopology this[
	Level level,
	Phase phase
] { get; }

Public ReadOnly Property PlanTopology ( 
	level As Level,
	phase As Phase
) As PlanTopology
	Get

public:
property PlanTopology^ PlanTopology[Level^ level, Phase^ phase] {
	PlanTopology^ get (Level^ level, Phase^ phase);
}

member PlanTopology : PlanTopology with get

Accessing plan topology requires that document is modifiable as it will actually trigger calculating plan topology if they have not been calculated yet. The time necessary for the calculations may be significant and should be considered.