code: public HttpConnection setRequestBody(final String input) {
          try {
              final byte[] inputBytes = input.getBytes("UTF-8");
              return setRequestBody(inputBytes);
          } catch (UnsupportedEncodingException e) {
              // This should never happen as every implementation of the java platform is required
              // to support UTF-8.
              throw new RuntimeException(e);
          }
      }
docs: Set the String of request body data to be sent to the server.
  
  @param input String of request body data to be sent to the server
  @return an {@link HttpConnection} for method chaining