code: public <T> T get(String key) {
          if (key.startsWith(PREFIX)) {
              key = key.substring(PREFIX_LEN);
          }
          ConfigKey rk = keyOf(key);
          if (null != rk) {
              return get(rk, null);
          } else {
              return AppConfigKey.helper.getConfiguration(key, null, raw);
          }
      }
docs: Look up configuration by a <code>String<code/> key. If the String key
  can be converted into {@link AppConfigKey rythm configuration key}, then
  it is converted and call to {@link #get(ConfigKey, Object)} method. Otherwise
  the original configuration map is used to fetch the value from the string key
  
  @param key
  @param <T>
  @return the configured item