question: public static List < String > toRelativePaths ( @ NotNull VirtualFile root , @ NotNull final Collection < FilePath > filePaths ) { ArrayList < String > rc = new ArrayList < String > ( filePaths . size ( ) ) ; for ( FilePath path : filePaths ) { rc . add ( relativePath ( root , path ) ) ; } return rc ; }
target:  Covert list of files to relative paths