/// <summary>
/// Performs a "minus" of SerializableList <c>b</c> from SerializableList <c>a</c>. This returns a SerializableList of all
/// the elements in SerializableList <c>a</c>, removing the elements that are also in SerializableList <c>b</c>.
/// The original SerializableLists are not modified during this operation. The result SerializableList is a <c>Clone()</c>
/// of SerializableList <c>a</c> containing the elements from the operation.
/// </summary>
/// <param name="a">A SerializableList of elements.</param>
/// <param name="b">A SerializableList of elements.</param>
/// <returns>A SerializableList containing <c>A - B</c> elements. <c>null</c> if <c>a</c> is <c>null</c>.</returns>
public static SerializableList <T> Minus(SerializableList <T> a, SerializableList <T> b)
{
if (a == null)
{
return(null);
}
else
{
return(a.Minus(b));
}
}
