logback-android/src/main/java/ch/qos/logback/core/spi/AbstractComponentTracker.java
private Entry<C> getFromEitherMap(String key) {
    Entry<C> entry = liveMap.get(key);
    if (entry != null)
      return entry;
    else {
      return lingerersMap.get(key);
    }
  }
private Entry<C> getFromEitherMap(String key) {
    Entry<C> entry = liveMap.get(key);
    if (entry != null)
      return entry;
    else {
      return lingerersMap.get(key);
    }
  }
Get an entry from the liveMap, if not found search the lingerersMap.

@param key
@return