private boolean exists(List<ConversionMethod> conversions){
  if (conversions.isEmpty())   return false;
  return (method=verifyConversionExistence(conversions)) != null;
}

private boolean exists ( List < ConversionMethod > conversions ) { if ( conversions . isEmpty ( ) ) return false ; return ( method = verifyConversionExistence ( conversions ) ) != null ; }
verifies the conversion method existence , returns true if exists , false otherwise .
