code: public static LoggerConfig getConfig(String name) {
      LoggerConfig config = strongRefMap.get(checkNotNull(name, "logger name"));
      if (config == null) {
        // Ignore race condition of multiple put as all instances are equivalent.
        // TODO(dbeaumont): Add a check and warn if the map grows "too large".
        config = new LoggerConfig(name);
        strongRefMap.put(name, config);
      }
      return config;
    }
docs: Returns a configuration instance suitable for configuring a logger with the same name.
  
  <p>This method obtains and wraps the underlying logger with the given name, retaining a strong
  reference and making it safe to use for persistent configuration changes. Note that as it makes
  very little sense to have a logger configuration object which wraps (and hides) an anonymous
  logger instance, {@code null} names are disallowed.
  
  @param name the name of the logger to be configured via this API.