+ method text =
+ let sv = call_method sv "text" [] in
+ string_of_sv sv
+
+ method name =
+ let sv = call_method sv "name" [] in
+ string_of_sv sv
+
+ method tag =
+ let sv = call_method sv "tag" [] in
+ string_of_sv sv
+
+ method base =
+ let sv = call_method sv "base" [] in
+ string_of_sv sv
+