How to override Activity onBackPressed from a Fragment

BaseActivity.java

public class BaseActivity extends AppCompatActivity {
	protected OnBackPressedListener onBackPressedListener;
  
	public void setOnBackPressedListener(OnBackPressedListener onBackPressedListener) {
		this.onBackPressedListener = onBackPressedListener;
	}

	@Override
	public void onBackPressed() {
		if (onBackPressedListener != null) {
			onBackPressedListener.doBack();
		} else {
			super.onBackPressed();
		}
	}
}

BaseBackPressedListener.java

public class BaseBackPressedListener implements OnBackPressedListener {
	private final FragmentActivity activity;

	public BaseBackPressedListener(FragmentActivity activity) {
		this.activity = activity;
	}

	@Override
	public void doBack() {
		if (!activity.getSupportFragmentManager().popBackStackImmediate()) {
			activity.supportFinishAfterTransition();
		}
	}
}

OnBackPressedListener.java

public interface OnBackPressedListener {
 	void doBack();
}

WebViewFragment.java

public class WebViewFragment extends Fragment {
	@Override
	public void onCreate(@Nullable Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		configureBackPressedListener();
	}
    
	public void configureBackPressedListener() {
		((BaseActivity) getActivity()).setOnBackPressedListener(new BaseBackPressedListener(getActivity()) {
			@Override
			public void doBack() {
				if (mWebView.canGoBack()) {
					mWebView.goBack();
				} else {
					super.doBack();
				}
			}
		});
	}
}