如何关闭改造响应主体？

Question

当我遇到here所讨论的使用okhttpclient导致内存泄漏的问题时，我将改造更新为最新版本com.squareup.retrofit2:retrofit:2.5.0，同时我尝试使用responseBody.close(); inside try{} catch(){}块关闭主体，如下所示：这样here的指示

appSettingService.getAppSetting().enqueue(new Callback<AppSettingModel.AppSettingMetaData>() {
            @Override
            public void onResponse(Call<AppSettingModel.AppSettingMetaData> call, Response<AppSettingModel.AppSettingMetaData> response) {

                try (ResponseBody responseBody = response.body()) {
                    Log.e("res code appSetting", String.valueOf(response.code()));
                    if (response.isSuccessful()) {
                        List<AppSettingModel> results = response.body().getValue();
                        if (results != null && results.size() > 0) {
                            saveToDatabase(results.get(0));
                        }
                    }
                    responseBody.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onFailure(Call<AppSettingModel.AppSettingMetaData> call, Throwable t) {
            }
        });

但是我在较低版本的Android中遇到了这个问题，因为在Api 16上运行时应用崩溃，并且显示了此错误

                                                                              java.lang.NoClassDefFoundError: javax/annotation/Nullable
                                                                                  at java.lang.reflect.Field.getAnnotation(Native Method)
                                                                                  at java.lang.reflect.Field.getAnnotation(Field.java:212)
                                                                                  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldNames(ReflectiveTypeAdapterFactory.java:72)
                                                                                  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:159)
                                                                                  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:100)
                                                                                  at com.google.gson.Gson.getAdapter(Gson.java:423)
                                                                                  at retrofit2.converter.gson.GsonConverterFactory.responseBodyConverter(GsonConverterFactory.java:64)
                                                                                  at retrofit2.Retrofit.nextResponseBodyConverter(Retrofit.java:328)
                                                                                  at retrofit2.Retrofit.responseBodyConverter(Retrofit.java:311)
                                                                                  at retrofit2.HttpServiceMethod.createResponseConverter(HttpServiceMethod.java:68)
                                                                                  at retrofit2.HttpServiceMethod.parseAnnotations(HttpServiceMethod.java:46)
                                                                                  at retrofit2.ServiceMethod.parseAnnotations(ServiceMethod.java:36)
                                                                                  at retrofit2.Retrofit.loadServiceMethod(Retrofit.java:168)
                                                                                  at retrofit2.Retrofit$1.invoke(Retrofit.java:147)
                                                                                  at $Proxy0.getAppSetting(Native Method)