code: public void addCharset(String nioCharsetName, Charset cloudhopperCharset) {
  		LOG.debug("Added charset mapping nio {} -> {}", nioCharsetName, cloudhopperCharset);
  		mapCloudhopperCharsetByNioCharsetName.put(nioCharsetName, cloudhopperCharset);
  	}
docs: Add a charset mapping.
  
  @param nioCharsetName
  Java NIO charset name
  @param cloudhopperCharset
  Cloudhopper charset