public bool AllowNullValues { get; }Public ReadOnly Property AllowNullValues As Boolean
	Get
Dim instance As KeyValuePairConverter
Dim value As Boolean
value = instance.AllowNullValuespublic:
property bool AllowNullValues {
	bool get ();
}This property should only be true if TValue is a value type other than NullableT or a reference type without a nullable annotation.
The keys of a key/value pair can never be .