[Vala] Extension Methods

[Uwe Strempel <u strempel googlemail com>]

Hi,
is there any feature like extension methods from c# 3.0 in vala supported.
It would be a cool feature in vala and could allow to write better code.
namespace ExtensionMethods
{
    public static class MyExtensions
    {
        public static int WordCount(this String str)

        {
            return str.Split(new char[] { ' ', '.', '?' }, StringSplitOptions.RemoveEmptyEntries).Length;

        }
    }   
}
(see http://msdn.microsoft.com/en-us/library/bb383977.aspx)

thanks,
regards
uwe