internal List AddList(List l)
{
// for thread safety we require a temporary copy of their data.
object[] them = l.GetObjectArray();
lock (this) {
object[] ret = new object[size + them.Length];
Array.Copy(data, 0, ret, 0, size);
Array.Copy(them, 0, ret, size, them.Length);
return(new List(ret));
}
}