### Question:
AppUserTurnstile extends Event implements Parcelable { @Nullable public String getSkuId() { return skuId; } AppUserTurnstile(String sdkIdentifier, String sdkVersion);   AppUserTurnstile(String sdkIdentifier, String sdkVersion, boolean isFromPreferences); private  AppUserTurnstile(Parcel in); @Nullable String getSkuId(); void setSkuId(@NonNull String skuId); @Override int describeContents(); @Override void writeToParcel(Parcel dest, int flags); @SuppressWarnings("unused")
  static final Parcelable.Creator<AppUserTurnstile> CREATOR; }### Answer:
@Test public void verifyDefaultSkuId() { AppUserTurnstile anAppUserTurnstileEvent = (AppUserTurnstile)obtainAnAppUserTurnstileEvent(); assertNull(anAppUserTurnstileEvent.getSkuId()); }