public override ResolveResult Resolve(CSharpResolver resolver)
		{
			ResolveResult targetRR = target.Resolve(resolver);
			if (targetRR.IsError)
				return targetRR;
			IList<IType> typeArgs = typeArguments.Resolve(resolver.CurrentTypeResolveContext);
			using (var busyLock = BusyManager.Enter(this)) {
				if (busyLock.Success) {
					return resolver.ResolveMemberAccess(targetRR, identifier, typeArgs, lookupMode);
				} else {
					// This can happen for "class Test : $Test.Base$ { public class Base {} }":
					return ErrorResolveResult.UnknownError; // don't cache this error
				}
			}
		}
		public override ResolveResult Resolve(CSharpResolver resolver)
		{
			ResolveResult rr;
			if (targetType != null)
				rr = new TypeResolveResult(targetType.Resolve(resolver.CurrentTypeResolveContext));
			else
				rr = targetExpression.Resolve(resolver);
			return resolver.ResolveMemberAccess(rr, memberName, typeArguments.Resolve(resolver.CurrentTypeResolveContext));
		}