public PointListChangedEventArgs(PointListChangedOperations op)
{
Operation = op;
}
/// <summary>
/// The constructor builds a custom PointListChangedEventArgs object with a specific
/// operation input type. This is a custom EventArgs type object.
/// </summary>
/// <param name="operation">a PointListChangedOperations Type input is expected</param>
public PointListChangedEventArgs(PointListChangedOperations operation)
{
Operation = operation;
} // end of method