FakeParameterIsNullable - свойство

public override bool IsNullable { get; set; }

Public Overrides Property IsNullable As Boolean
	Get
	Set

public:
virtual property bool IsNullable {
	bool get () override;
	void set (bool value) override;
}

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