logback-android/src/main/java/ch/qos/logback/core/net/server/ConcurrentServerRunner.java
private void addClient(T client) {
    clientsLock.lock();
    try {
      clients.add(client);
    }
    finally {
      clientsLock.unlock();
    }
  }
private void addClient(T client) {
    clientsLock.lock();
    try {
      clients.add(client);
    }
    finally {
      clientsLock.unlock();
    }
  }
Adds a client to the collection of those being tracked by the server.
@param client the client to add