code: public static CommerceTaxFixedRate findByCommerceTaxMethodId_First(
  		long commerceTaxMethodId,
  		OrderByComparator<CommerceTaxFixedRate> orderByComparator)
  		throws com.liferay.commerce.tax.engine.fixed.exception.NoSuchTaxFixedRateException {
  		return getPersistence()
  				   .findByCommerceTaxMethodId_First(commerceTaxMethodId,
  			orderByComparator);
  	}
docs: Returns the first commerce tax fixed rate in the ordered set where commerceTaxMethodId = &#63;.
  
  @param commerceTaxMethodId the commerce tax method ID
  @param orderByComparator the comparator to order the set by (optionally <code>null</code>)
  @return the first matching commerce tax fixed rate
  @throws NoSuchTaxFixedRateException if a matching commerce tax fixed rate could not be found