public virtual bool this[
	int docID
] { get; set; }

public virtual bool this[
	int docID
] { get; set; }

Public Overridable Default Property Item ( 
	docID As Integer
) As Boolean
	Get
	Set

Public Overridable Default Property Item ( 
	docID As Integer
) As Boolean
	Get
	Set

public:
virtual property bool default[int docID] {
	bool get (int docID);
	void set (int docID, bool value);
}

public:
virtual property bool default[int docID] {
	bool get (int docID);
	void set (int docID, bool value);
}

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

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