Ensure accept parameter in synthesize() is not required

text-to-speech/src/main/java/com/ibm/watson/developer_cloud/text_to_speech/v1/TextToSpeech.java

@@ -43,13 +43,6 @@
 import java.io.InputStream;
 
 /**
- * ### Service Overview
- * The IBM Text to Speech service provides a Representational State Transfer (REST) Application Programming Interface
- * (API) that uses IBM's speech-synthesis capabilities to synthesize text into natural-sounding speech in a variety of
- * languages, dialects, and voices. The service currently synthesizes text from US English, UK English, French, German,
- * Italian, Japanese, Spanish, or Brazilian Portuguese into audio spoken in a male or female voice (the service supports
- * only a single gender for some languages). The audio is streamed back to the client with minimal delay.
- * ### API Overview
  * The Text to Speech service consists of the following related endpoints:
  * * `/v1/voices` provides information about the voices available for synthesized speech.
  * * `/v1/synthesize` synthesizes written text to audio speech.
@@ -61,62 +54,6 @@
  * * `/v1/customizations/{customization_id}/words` and `/v1/customizations/{customization_id}/words/{word}` lets users
  * manage the words in a custom voice model.
  *
- *
- * **Note about the Try It Out feature:** The `Try it out!` button lets you experiment with the methods of the API by
- * making actual cURL calls to the service. The feature is **not** supported for use with the `POST /v1/synthesize`
- * method. For examples of calls to this method, see the [Text to Speech API
- * reference](http://www.ibm.com/watson/developercloud/text-to-speech/api/v1/).
- * ### API Usage
- * The following information provides details about using the service to synthesize audio:
- * * **Audio formats:** The service supports a number of audio formats (MIME types). For more information about audio
- * formats and sampling rates, including links to a number of Internet sites that provide technical and usage details
- * about the different formats, see [Specifying an audio
- * format](https://console.bluemix.net/docs/services/text-to-speech/http.html#format).
- * * **SSML:** Many methods refer to the Speech Synthesis Markup Language (SSML), an XML-based markup language that
- * provides annotations of text for speech-synthesis applications; for example, many methods accept or produce
- * translations that use an SSML-based phoneme format. See [Using
- * SSML](https://console.bluemix.net/docs/services/text-to-speech/SSML.html) and [Using IBM
- * SPR](https://console.bluemix.net/docs/services/text-to-speech/SPRs.html).
- * * **Word translations:** Many customization methods accept or return sounds-like or phonetic translations for words.
- * A phonetic translation is based on the SSML format for representing the phonetic string of a word. Phonetic
- * translations can use standard International Phonetic Alphabet (IPA) representation:
- *
- * <phoneme alphabet="ipa" ph="təmˈɑto"></phoneme>
- *
- * or the proprietary IBM Symbolic Phonetic Representation (SPR):
- *
- * <phoneme alphabet="ibm" ph="1gAstroEntxrYFXs"></phoneme>
- *
- * For more information about customization and about sounds-like and phonetic translations, see [Understanding
- * customization](https://console.bluemix.net/docs/services/text-to-speech/custom-intro.html).
- * * **GUIDs:** The pronunciation and customization methods accept or return a Globally Unique Identifier (GUID). For
- * example, customization IDs (specified with the `customization_id` parameter) and service credentials are GUIDs. GUIDs
- * are hexadecimal strings that have the format `xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx`.
- * * **WebSocket interface:** The service also offers a WebSocket interface as an alternative to its HTTP REST interface
- * for speech synthesis. The WebSocket interface supports both plain text and SSML input, including the SSML
- * <mark> element and word timings. See [The WebSocket
- * interface](https://console.bluemix.net/docs/services/text-to-speech/websockets.html).
- * * **Authentication:** You authenticate to the service by using your service credentials. You can use your credentials
- * to authenticate via a proxy server that resides in IBM Cloud, or you can use your credentials to obtain a token and
- * contact the service directly. See [Service credentials for Watson
- * services](https://console.bluemix.net/docs/services/watson/getting-started-credentials.html) and [Tokens for
- * authentication](https://console.bluemix.net/docs/services/watson/getting-started-tokens.html).
- * * **Custom voice model ownership:** In all cases, you must use service credentials created for the instance of the
- * service that owns a custom voice model to use the methods described in this documentation with that model. For more
- * information, see [Ownership of custom voice
- * models](https://console.bluemix.net/docs/services/text-to-speech/custom-models.html#customOwner).
- * * **Request Logging:** By default, all Watson services log requests and their results. Data is collected only to
- * improve the Watson services. If you do not want to share your data, set the header parameter
- * `X-Watson-Learning-Opt-Out` to `true` for each request. Data is collected for any request that omits this header. See
- * [Controlling request logging for Watson
- * services](https://console.bluemix.net/docs/services/watson/getting-started-logging.html).
- *
- * The service does not log data (words and translations) that are used to build custom language models; your training
- * data is never used to improve the service's base models. The service does log data when a custom model is used with a
- * synthesize request; you must set the `X-Watson-Learning-Opt-Out` request header to prevent logging for recognition
- * requests. For more information, see [Request logging and data
- * privacy](https://console.bluemix.net/docs/services/text-to-speech/custom-models.html#customLogging).
- *
  * For more information about the service and its various interfaces, see [About Text to
  * Speech](https://console.bluemix.net/docs/services/text-to-speech/index.html).
  *
@@ -217,7 +154,9 @@ public ServiceCall<Voices> listVoices() {
   public ServiceCall<InputStream> synthesize(SynthesizeOptions synthesizeOptions) {
     Validator.notNull(synthesizeOptions, "synthesizeOptions cannot be null");
     RequestBuilder builder = RequestBuilder.post("/v1/synthesize");
-    builder.header("Accept", synthesizeOptions.accept());
+    if (synthesizeOptions.accept() != null) {
+      builder.header("Accept", synthesizeOptions.accept());
+    }
     if (synthesizeOptions.voice() != null) {
       builder.query("voice", synthesizeOptions.voice());
     }

text-to-speech/src/main/java/com/ibm/watson/developer_cloud/text_to_speech/v1/model/SynthesizeOptions.java

@@ -119,11 +119,9 @@ public Builder() {
      * Instantiates a new builder with required properties.
      *
      * @param text the text
-     * @param accept the accept
      */
-    public Builder(String text, String accept) {
+    public Builder(String text) {
       this.text = text;
-      this.accept = accept;
     }
 
     /**
@@ -182,7 +180,6 @@ public Builder customizationId(String customizationId) {
 
   private SynthesizeOptions(Builder builder) {
     Validator.notNull(builder.text, "text cannot be null");
-    Validator.notNull(builder.accept, "accept cannot be null");
     text = builder.text;
     accept = builder.accept;
     voice = builder.voice;

text-to-speech/src/main/java/com/ibm/watson/developer_cloud/text_to_speech/v1/model/VoiceModels.java

@@ -12,10 +12,10 @@
  */
 package com.ibm.watson.developer_cloud.text_to_speech.v1.model;
 
-import com.ibm.watson.developer_cloud.service.model.GenericModel;
-
 import java.util.List;
 
+import com.ibm.watson.developer_cloud.service.model.GenericModel;
+
 /**
  * VoiceModels.
  */