code: public void setDatePicker(int index, int year, int monthOfYear, int dayOfMonth) {
  		if(config.commandLogging){
  			Log.d(config.commandLoggingTag, "setDatePicker("+index+", "+year+", "+monthOfYear+", "+dayOfMonth+")");
  		}
  		
  		setDatePicker(waiter.waitForAndGetView(index, DatePicker.class), year, monthOfYear, dayOfMonth);
  	}
docs: Sets the date in a DatePicker matching the specified index.
  
  @param index the index of the {@link DatePicker}. {@code 0} if only one is available
  @param year the year e.g. 2011
  @param monthOfYear the month which starts from zero e.g. 0 for January
  @param dayOfMonth the day e.g. 10