/// <summary>
/// "yields" to the proc.
/// </summary>
internal void BuildInvoke(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args) {
Assert.NotNull(metaBuilder, args);
Debug.Assert(!args.Signature.HasBlock);
var convertedTarget = AstUtils.Convert(args.TargetExpression, typeof(BlockParam));
// test for target type:
metaBuilder.AddTypeRestriction(args.Target.GetType(), args.TargetExpression);
metaBuilder.Result = AstFactory.YieldExpression(
args.GetSimpleArgumentExpressions(),
args.GetSplattedArgumentExpression(),
args.GetRhsArgumentExpression(),
convertedTarget, // block param
Ast.Property(convertedTarget, SelfProperty) // self
);
}