java-sdk: [speech-to-text] recognize() method without sessions failing with JsonParseException

The following Java program (renamed for attachment) tests the recognize() method without sessions: STTrecognizeSessionless.txt. I can’t find anything wrong in the call to the method, though I could be mistaken. But the program produces a JsonParseException, presumably on the options object that is passed to the call.:

Exception in thread "main" com.google.gson.JsonParseException: Expecting array but found object: {}
        at com.google.gson.JsonArrayDeserializationVisitor.startVisitingObject(JsonArrayDeserializationVisitor.java:89)
        at com.google.gson.ObjectNavigator.accept(ObjectNavigator.java:119)
        at com.google.gson.JsonDeserializationContextDefault.fromJsonArray(JsonDeserializationContextDefault.java:67)
        at com.google.gson.JsonDeserializationContextDefault.deserialize(JsonDeserializationContextDefault.java:52)
        at com.google.gson.DefaultTypeAdapters$CollectionTypeAdapter.deserialize(DefaultTypeAdapters.java:663)
        at com.google.gson.DefaultTypeAdapters$CollectionTypeAdapter.deserialize(DefaultTypeAdapters.java:624)
        at com.google.gson.JsonDeserializerExceptionWrapper.deserialize(JsonDeserializerExceptionWrapper.java:51)
        at com.google.gson.JsonDeserializationVisitor.invokeCustomDeserializer(JsonDeserializationVisitor.java:92)
        at com.google.gson.JsonObjectDeserializationVisitor.visitFieldUsingCustomHandler(JsonObjectDeserializationVisitor.java:117)
        at com.google.gson.ReflectingFieldNavigator.visitFieldsReflectively(ReflectingFieldNavigator.java:63)
        at com.google.gson.ObjectNavigator.accept(ObjectNavigator.java:120)
        at com.google.gson.JsonDeserializationContextDefault.fromJsonObject(JsonDeserializationContextDefault.java:76)
        at com.google.gson.JsonDeserializationContextDefault.deserialize(JsonDeserializationContextDefault.java:54)
        at com.google.gson.DefaultTypeAdapters$CollectionTypeAdapter.deserialize(DefaultTypeAdapters.java:663)
        at com.google.gson.DefaultTypeAdapters$CollectionTypeAdapter.deserialize(DefaultTypeAdapters.java:624)
        at com.google.gson.JsonDeserializerExceptionWrapper.deserialize(JsonDeserializerExceptionWrapper.java:51)
        at com.google.gson.JsonDeserializationVisitor.invokeCustomDeserializer(JsonDeserializationVisitor.java:92)
        at com.google.gson.JsonObjectDeserializationVisitor.visitFieldUsingCustomHandler(JsonObjectDeserializationVisitor.java:117)
        at com.google.gson.ReflectingFieldNavigator.visitFieldsReflectively(ReflectingFieldNavigator.java:63)
        at com.google.gson.ObjectNavigator.accept(ObjectNavigator.java:120)
        at com.google.gson.JsonDeserializationContextDefault.fromJsonObject(JsonDeserializationContextDefault.java:76)
        at com.google.gson.JsonDeserializationContextDefault.deserialize(JsonDeserializationContextDefault.java:54)
        at com.google.gson.DefaultTypeAdapters$CollectionTypeAdapter.deserialize(DefaultTypeAdapters.java:663)
        at com.google.gson.DefaultTypeAdapters$CollectionTypeAdapter.deserialize(DefaultTypeAdapters.java:624)
        at com.google.gson.JsonDeserializerExceptionWrapper.deserialize(JsonDeserializerExceptionWrapper.java:51)
        at com.google.gson.JsonDeserializationVisitor.invokeCustomDeserializer(JsonDeserializationVisitor.java:92)
        at com.google.gson.JsonObjectDeserializationVisitor.visitFieldUsingCustomHandler(JsonObjectDeserializationVisitor.java:117)
        at com.google.gson.ReflectingFieldNavigator.visitFieldsReflectively(ReflectingFieldNavigator.java:63)
        at com.google.gson.ObjectNavigator.accept(ObjectNavigator.java:120)
        at com.google.gson.JsonDeserializationContextDefault.fromJsonObject(JsonDeserializationContextDefault.java:76)
        at com.google.gson.JsonDeserializationContextDefault.deserialize(JsonDeserializationContextDefault.java:54)
        at com.google.gson.Gson.fromJson(Gson.java:551)
        at com.google.gson.Gson.fromJson(Gson.java:498)
       at com.ibm.watson.developer_cloud.util.ResponseUtils.getObject(ResponseUtils.java:105)
        at com.ibm.watson.developer_cloud.service.WatsonService.executeRequest(WatsonService.java:184)
        at com.ibm.watson.developer_cloud.speech_to_text.v1.SpeechToText.recognize(SpeechToText.java:285)
        at com.ibm.watson.developer_cloud.speech_to_text.v1.STTrecognizeSessionless.main(STTrecognizeSessionless.java:19)

I can pass along the audio file if you need it.

Testing with java-sdk-2.10.0-jar-with-dependencies.jar.