python internal methods

Author: Jiarui Guo

specification/translation/data-plane/TextTranslation/routes.tsp

@@ -69,6 +69,7 @@ op translateV3 is CustomOperation<
 @doc("Translate Text")
 @route("translate")
 @added(APIVersion.v2025_10_01_preview)
+@access(Access.internal, "python")
 op translate is CustomOperation<
   TranslateBody,
   TranslateParameters,
@@ -98,6 +99,7 @@ op transliterateV3 is CustomOperation<
 @summary("Transliterate Text")
 @doc("Transliterate Text")
 @added(APIVersion.v2025_10_01_preview)
+@access(Access.internal, "python")
 op transliterate is CustomOperation<
   TransliterateBody,
   TransliterateParameters,