question: private static CharHandler parseUnprintableExtCodes ( String [ ] codeStrings ) { if ( codeStrings . length != 1 ) { throw new IllegalStateException ( "Unexpected code strings " + Arrays . asList ( codeStrings ) ) ; } byte [ ] bytes = codesToBytes ( codeStrings [ 0 ] , true ) ; if ( bytes . length != 1 ) { throw new IllegalStateException ( "Unexpected code strings " + Arrays . asList ( codeStrings ) ) ; } return new UnprintableExtCharHandler ( bytes [ 0 ] ) ; }
target:  Returns a UnprintableExtCharHandler parsed from the given index code strings.