PublishProgress from inside a function in doInBackground

public class LongOperation extends AsyncTask<String, Integer, String> 
{
    ...

    @Override
    protected String doInBackground(String... params) 
    {
        SomeClass.doStuff(this);
        return null;
    }
    ...

    public void doProgress(int value)
    {
        publishProgress(value);
    }
}
...
public class SomeClass 
{
    public static void doStuff(LongOperation task)
    {
        // do stuff
        task.doProgress(1);
        // more stuff etc
    }
}