Method that will output given chunk of binary data as base64 encoded, as a complete String value (surrounded by double quotes). This method defaults
Note: because Json Strings can not contain unescaped linefeeds, if linefeeds are included (as per last argument), they must be escaped. This adds overhead for decoding without improving readability. Alternatively if linefeeds are not included, resulting String value may violate the requirement of base64 RFC which mandates line-length of 76 characters and use of linefeeds. However, all {@link JsonParser} implementationsare required to accept such "long line base64"; as do typical production-level base64 decoders.
@param bv Base64 variant to use: defines details such aswhether padding is used (and if so, using which character); what is the maximum line length before adding linefeed, and also the underlying alphabet to use.