Representation of the collection of remote Clients that are connected to this server.
This list changes in size as connections are received or closed, or if an error occurs on the connection (which implies a close).
Users cannot change the size or append to the contents of this collection since it is managed internally.
References to LlpConnection objects within this collection should not be maintained. Instead, always access LlpConnection objects through this collection interface, or the event to which LlpConnection objects are passed as parameters.