fix: add model signature for batch document translation

Google APIs · copybara-github · commit 67e6e0a1ddda · 2021-10-14T11:18:28.000-07:00
PiperOrigin-RevId: 403140062
diff --git a/google/cloud/translate/v3/translation_service.proto b/google/cloud/translate/v3/translation_service.proto
@@ -123,6 +123,8 @@ service TranslationService {
       post: "/v3/{parent=projects/*/locations/*}:batchTranslateDocument"
       body: "*"
     };
+    option (google.api.method_signature) =
+        "parent,source_language_code,target_language_codes,input_configs,output_config";
     option (google.longrunning.operation_info) = {
       response_type: "BatchTranslateDocumentResponse"
       metadata_type: "BatchTranslateDocumentMetadata"
diff --git a/google/cloud/translate/v3beta1/translation_service.proto b/google/cloud/translate/v3beta1/translation_service.proto
@@ -120,6 +120,8 @@ service TranslationService {
       post: "/v3beta1/{parent=projects/*/locations/*}:batchTranslateDocument"
       body: "*"
     };
+    option (google.api.method_signature) =
+        "parent,source_language_code,target_language_codes,input_configs,output_config";
     option (google.longrunning.operation_info) = {
       response_type: "BatchTranslateDocumentResponse"
       metadata_type: "BatchTranslateDocumentMetadata"
