question: public InputStreamReader reader ( final String charset ) throws HttpRequestException { try { return new InputStreamReader ( stream ( ) , getValidCharset ( charset ) ) ; } catch ( UnsupportedEncodingException e ) { throw new HttpRequestException ( e ) ; } }
target:  Get reader to response body using given character set. <p> This will fall back to using the UTF-8 character set if the given charset is null