fix: replace get("model") with translationPb.getModel()

google-cloud-translate/src/main/java/com/google/cloud/translate/Translation.java

@@ -104,10 +104,9 @@ public final boolean equals(Object obj) {
   }
 
   static Translation fromPb(TranslationsResource translationPb) {
-    // TODO remove get("model") as soon as REST apiary supports model
     return new Translation(
         translationPb.getTranslatedText(),
         translationPb.getDetectedSourceLanguage(),
-        (String) translationPb.get("model"));
+        translationPb.getModel());
   }
 }

google-cloud-translate/src/test/java/com/google/cloud/translate/TranslationTest.java

@@ -25,23 +25,27 @@ public class TranslationTest {
 
   private static final String TRANSLATED_TEXT = "Hello world";
   private static final String SOURCE_LANGUAGE = "en";
+  private static final String MODEL = "nmt";
   private static final TranslationsResource TRANSLATION_PB =
       new TranslationsResource()
           .setTranslatedText(TRANSLATED_TEXT)
-          .setDetectedSourceLanguage(SOURCE_LANGUAGE);
+          .setDetectedSourceLanguage(SOURCE_LANGUAGE)
+          .setModel(MODEL);
   private static final Translation TRANSLATION = Translation.fromPb(TRANSLATION_PB);
 
   @Test
   public void testFromPb() {
     assertEquals(TRANSLATED_TEXT, TRANSLATION.getTranslatedText());
     assertEquals(SOURCE_LANGUAGE, TRANSLATION.getSourceLanguage());
+    assertEquals(MODEL, TRANSLATION.getModel());
     compareTranslation(TRANSLATION, Translation.fromPb(TRANSLATION_PB));
   }
 
   private void compareTranslation(Translation expected, Translation value) {
     assertEquals(expected, value);
     assertEquals(expected.getTranslatedText(), value.getTranslatedText());
     assertEquals(expected.getSourceLanguage(), value.getSourceLanguage());
+    assertEquals(expected.getModel(), value.getModel());
     assertEquals(expected.hashCode(), value.hashCode());
     assertEquals(expected.toString(), value.toString());
   }