feat(LanguageTranslator): add support for language detection

Scripts/Services/LanguageTranslator/V3/LanguageTranslatorService.cs

@@ -91,15 +91,19 @@ public LanguageTranslatorService(string versionDate, Authenticator authenticator
         /// <summary>
         /// Translate.
         ///
-        /// Translates the input text from the source language to the target language.
+        /// Translates the input text from the source language to the target language. A target language or translation
+        /// model ID is required. The service attempts to detect the language of the source text if it is not specified.
         /// </summary>
         /// <param name="callback">The callback function that is invoked when the operation completes.</param>
         /// <param name="text">Input text in UTF-8 encoding. Multiple entries will result in multiple translations in
         /// the response.</param>
-        /// <param name="modelId">A globally unique string that identifies the underlying model that is used for
-        /// translation. (optional)</param>
-        /// <param name="source">Translation source language code. (optional)</param>
-        /// <param name="target">Translation target language code. (optional)</param>
+        /// <param name="modelId">The model to use for translation. For example, `en-de` selects the IBM provided base
+        /// model for English to German translation. A model ID overrides the source and target parameters and is
+        /// required if you use a custom model. If no model ID is specified, you must specify a target language.
+        /// (optional)</param>
+        /// <param name="source">Language code that specifies the language of the source document. (optional)</param>
+        /// <param name="target">Language code that specifies the target language for translation. Required if model ID
+        /// is not specified. (optional)</param>
         /// <returns><see cref="TranslationResult" />TranslationResult</returns>
         public bool Translate(Callback<TranslationResult> callback, List<string> text, string modelId = null, string source = null, string target = null)
         {
@@ -716,15 +720,18 @@ private void OnListDocumentsResponse(RESTConnector.Request req, RESTConnector.Re
         /// <param name="file">The contents of the source file to translate.
         ///
         /// [Supported file
-        /// types](https://cloud.ibm.com/docs/services/language-translator?topic=language-translator-document-translator-tutorial#supported-file-formats)
+        /// types](https://cloud.ibm.com/docs/language-translator?topic=language-translator-document-translator-tutorial#supported-file-formats)
         ///
         /// Maximum file size: **20 MB**.</param>
         /// <param name="filename">The filename for file.</param>
         /// <param name="fileContentType">The content type of file. (optional)</param>
-        /// <param name="modelId">The model to use for translation. `model_id` or both `source` and `target` are
-        /// required. (optional)</param>
+        /// <param name="modelId">The model to use for translation. For example, `en-de` selects the IBM provided base
+        /// model for English to German translation. A model ID overrides the source and target parameters and is
+        /// required if you use a custom model. If no model ID is specified, you must specify a target language.
+        /// (optional)</param>
         /// <param name="source">Language code that specifies the language of the source document. (optional)</param>
-        /// <param name="target">Language code that specifies the target language for translation. (optional)</param>
+        /// <param name="target">Language code that specifies the target language for translation. Required if model ID
+        /// is not specified. (optional)</param>
         /// <param name="documentId">To use a previously submitted document as the source for a new translation, enter
         /// the `document_id` of the document. (optional)</param>
         /// <returns><see cref="DocumentStatus" />DocumentStatus</returns>
@@ -1015,4 +1022,4 @@ private void OnGetTranslatedDocumentResponse(RESTConnector.Request req, RESTConn
                 ((RequestObject<byte[]>)req).Callback(response, resp.Error);
         }
     }
-}
+}

Scripts/Services/LanguageTranslator/V3/Model/DocumentStatus.cs

@@ -79,6 +79,12 @@ public class StatusValue
         [JsonProperty("source", NullValueHandling = NullValueHandling.Ignore)]
         public string Source { get; set; }
         /// <summary>
+        /// A score between 0 and 1 indicating the confidence of source language detection. A higher value indicates
+        /// greater confidence. This is returned only when the service automatically detects the source language.
+        /// </summary>
+        [JsonProperty("detected_language_confidence", NullValueHandling = NullValueHandling.Ignore)]
+        public double? DetectedLanguageConfidence { get; set; }
+        /// <summary>
         /// Translation target language code.
         /// </summary>
         [JsonProperty("target", NullValueHandling = NullValueHandling.Ignore)]

Scripts/Services/LanguageTranslator/V3/Model/TranslationResult.cs

@@ -36,6 +36,17 @@ public class TranslationResult
         [JsonProperty("character_count", NullValueHandling = NullValueHandling.Ignore)]
         public long? CharacterCount { get; set; }
         /// <summary>
+        /// The language code of the source text if the source language was automatically detected.
+        /// </summary>
+        [JsonProperty("detected_language", NullValueHandling = NullValueHandling.Ignore)]
+        public string DetectedLanguage { get; set; }
+        /// <summary>
+        /// A score between 0 and 1 indicating the confidence of source language detection. A higher value indicates
+        /// greater confidence. This is returned only when the service automatically detects the source language.
+        /// </summary>
+        [JsonProperty("detected_language_confidence", NullValueHandling = NullValueHandling.Ignore)]
+        public double? DetectedLanguageConfidence { get; set; }
+        /// <summary>
         /// List of translation output in UTF-8, corresponding to the input text entries.
         /// </summary>
         [JsonProperty("translations", NullValueHandling = NullValueHandling.Ignore)]