question: private static String readComment ( String input , int index ) { String comment = null ; Matcher matcher = COMMENT_PATTERN . matcher ( input . substring ( index ) ) ; if ( matcher . find ( ) ) { comment = matcher . group ( 1 ) ; comment = comment . substring ( 1 ) ; } return comment ; }
target:  Reads the first comment line from the input, and returns the comment line (including the line break character) without the leading "#".