code: public static CommerceCountry fetchByG_Tw(long groupId,
  		String twoLettersISOCode, boolean retrieveFromCache) {
  		return getPersistence()
  				   .fetchByG_Tw(groupId, twoLettersISOCode, retrieveFromCache);
  	}
docs: Returns the commerce country where groupId = &#63; and twoLettersISOCode = &#63; or returns <code>null</code> if it could not be found, optionally using the finder cache.
  
  @param groupId the group ID
  @param twoLettersISOCode the two letters iso code
  @param retrieveFromCache whether to retrieve from the finder cache
  @return the matching commerce country, or <code>null</code> if a matching commerce country could not be found