code: public void encodeNullToBlank(Writer writer, T obj) throws IOException {
  		if (obj == null) {
  			writer.write("{}");
  			writer.flush();
  			return;
  		}
  
  		encodeNullToNull(writer, obj);
  	}
docs: Encodes the given value into the JSON format, and writes it using the given writer.<br>
  Writes "{}" if null is given.
  
  @param writer {@link Writer} to be used for writing value
  @param obj Value to encoded
  @throws IOException