title: Write object in Parcel in writeToParcel method
body: <p>hi mate i have a class that must to implement Parcelable to allow to put this new type in a bundle
  My class have 2 attribute
  private int pid;
  private Object data;
  i have to implement writeToParcel method : but i dont know to write the attribute data</p>
  
  <pre><code> @Override
  public void writeToParcel(Parcel dest, int flags) {
  dest.writeInt(pid);
  dest.?
  
  }
  </code></pre>