Add printer for tfl options 2

LiteRT-PiperOrigin-RevId: 774940906

Author: LukeBoyer

litert/core/model/model.h

@@ -1143,6 +1143,17 @@ void AbslStringify(Sink& sink, const ::litert::internal::TflOptions& opts) {
   }
 }
 
+template <class Sink>
+void AbslStringify(Sink& sink, const ::litert::internal::TflOptions2& opts) {
+  // NOTE: Printers for specific options will be added on an as needed basis.
+  const auto type = opts.type;
+  switch (type) {
+    default:
+      absl::Format(&sink, "{%s}", ::litert::kNoPrinterTag);
+      break;
+  }
+}
+
 // AddOptionsT
 
 template <typename Sink>

litert/core/model/model_test.cc

@@ -586,6 +586,14 @@ TEST(PrintingTest, TflOptionsNoPrinter) {
   EXPECT_EQ(absl::StrFormat("%v", opts), "{!no_printer}");
 }
 
+TEST(PrintingTest, TflOptions2NoPrinter) {
+  TflOptions2 opts;
+  opts.type = ::tflite::BuiltinOptions2_StableHLOCompositeOptions;
+  ::tflite::StableHLOCompositeOptionsT comp_opts;
+  opts.Set(std::move(comp_opts));
+  EXPECT_EQ(absl::StrFormat("%v", opts), "{!no_printer}");
+}
+
 TEST(PrintingTest, FusedActivationFunction) {
   EXPECT_EQ(absl::StrFormat("%v", ::tflite::ActivationFunctionType_RELU),
             "RELU");