question: public static BigFraction parseEditRate ( List < Long > editRate ) { if ( editRate . size ( ) != 2 ) { throw new ConversionHelperException ( "Incorrect edit rate! Edit rate must consist of two values." ) ; } return new BigFraction ( editRate . get ( 0 ) , editRate . get ( 1 ) ) ; }
target:  Returns a fraction corresponding to the given edit rate string. The edit rate is assumed to be a list containing of two elements: numerator and denominator.