NBMsgPack062: UnusedDataPacket properties should be private

A data type containing the special UnusedDataPacket member should be declared as private.

Example violation

public class Person
{
    public required string Name { get; set; }

    public UnusedDataPacket Extension { get; set; } // NBMsgPack062
}

Resolution

Change the public accessibility modifier to private. In doing so, remember to also add a PropertyShapeAttribute to avoid introducing NBMsgPack060.

public class Person
{
    public required string Name { get; set; }

    [PropertyShape]
    private UnusedDataPacket Extension { get; set; }
}