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    rel: describedby
---
> **Documentation Index:** Fetch the complete configuration index at https://yandex.com/support/varioqub-app/en/llms.txt?revision=r20853974

# Null adapter

If you want to use flags and configure your app without collecting statistics and sending them for analysis, you can implement a null adapter.

Example of a null adapter implementation code:

{% list tabs %}

- Kotlin

  ```kotlin
  import com.varioqub.config.analyticadapter.AdapterIdentifiersCallback
  import com.varioqub.config.analyticadapter.VarioqubConfigAdapter

  class VarioqubAdapter : VarioqubConfigAdapter {
      override fun clear() {}

      override fun reportTriggeredTestId(testId: Long) {}

      override fun requestDeviceId(callback: AdapterIdentifiersCallback) {
          callback.onSuccess("123")
      }

      override fun requestUserId(callback: AdapterIdentifiersCallback) {
          callback.onSuccess("123")
      }

      override fun resetTriggeredTestId() {}

      override fun setExperiments(experiments: String) {}
  }
  ```

- Java

  ```java
  import com.varioqub.config.analyticadapter.AdapterIdentifiersCallback;
  import com.varioqub.config.analyticadapter.VarioqubConfigAdapter;

  public class VarioqubAdapter extends VarioqubConfigAdapter {
      @Override
      public void clear() {}

      @Override
      public void reportTriggeredTestId(long testId) {}

      @Override
      public void requestDeviceId(AdapterIdentifiersCallback callback) {
          callback.onSuccess("123");
      }

      @Override
      public void requestUserId(AdapterIdentifiersCallback callback) {
          callback.onSuccess("123");
      }

      @Override
      public void resetTriggeredTestId() {}

      @Override
      public void setExperiments(String experiments) {}
  }
  ```

{% endlist %}


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