code: function (type, options) {
              var caseType = type.toLowerCase();
              if (caseType in APPENDER_TYPES) {
                  return new APPENDER_TYPES[caseType](options);
              } else {
                  throw new Error(type + " appender is not registered!");
              }
  
          }
docs: Acts as a factory for appenders.
  
  @example
  
  var logging = comb.logging,
  Logger = logging.Logger,
  Appender = logging.appenders.Appender;
  
  var logger = comb.logging.Logger.getLogger("my.logger");
  logger.addAppender(Appender.createAppender("consoleAppender"));
  
  @param {String} type the type of appender to create.
  @param {Object} [options={}] additional options to pass to the appender.
  @return {comb.logging.appenders.Appender} an appender to add to a logger.