Hello SAKryukov,
Thanks for the quick reply.
I found the solution:
MethodInfo method = typeof(GenericEntityMapping).GetMethod("Map");
MethodInfo generic = method.MakeGenericMethod(Type.GetType(pInfo.PropertyType.FullName));
object[] objParam = { node, System.Activator.CreateInstance(Type.GetType(pInfo.PropertyType.FullName)) };
pInfo.SetValue(entity, generic.Invoke(this, objParam), null);