@SuppressWarnings("unchecked")
    @Override
    protected Result doInBackground(final Params... params) {
        return doInBackgroundInternal(params);
    }
Launch the process in background.

@param params The parameters of the task.
@return A result, defined by the subclass of this task.
main/src/main/java/cgeo/geocaching/utils/AbstractAsyncTaskWithProgress.java