question: public static int findHighestMajorVersion ( Collection < Throwable > list ) { int result = 0 ; for ( Throwable t : list ) { if ( t instanceof InconvertibleClassError ) { InconvertibleClassError error = ( InconvertibleClassError ) t ; result = Math . max ( result , error . getMajor ( ) ) ; } } return result ; }
target:  Given a set of exceptions, return the highest known classfile version format 