public override double this[
	int i0,
	int i1,
	int i2
] { get; set; }

Public Overrides Default Property Item ( 
	i0 As Integer,
	i1 As Integer,
	i2 As Integer
) As Double
	Get
	Set

public:
virtual property double default[int i0, int i1, int i2] {
	double get (int i0, int i1, int i2) override;
	void set (int i0, int i1, int i2, double value) override;
}

abstract Item : float with get, set
override Item : float with get, set