logback-android/src/main/java/ch/qos/logback/core/spi/AbstractComponentTracker.java
public synchronized C find(String key) {
    Entry<C> entry = getFromEitherMap(key);
    if (entry == null) return null;
    else return entry.component;
  }
public synchronized C find(String key) {
    Entry<C> entry = getFromEitherMap(key);
    if (entry == null) return null;
    else return entry.component;
  }
{@inheritDoc}

<p>Note that this method is synchronized.</p>

@param key {@inheritDoc}
@return {@inheritDoc}