code: @Override
  	public CommerceCurrency fetchByG_C(long groupId, String code) {
  		return fetchByG_C(groupId, code, true);
  	}
docs: Returns the commerce currency where groupId = &#63; and code = &#63; or returns <code>null</code> if it could not be found. Uses the finder cache.
  
  @param groupId the group ID
  @param code the code
  @return the matching commerce currency, or <code>null</code> if a matching commerce currency could not be found