@Override
    public Certificate[] getPeerCertificates() {
        // Ignore
        return new Certificate[0];
    }
Abstract implementation of the Connection interface that models abstract connections. Abstract
connections are connections that don't have a physical connection counterpart. Instead they
can be seen as conceptual or just 'abstract' connections.<p>

Default values and common behavior of virtual connections are modeled in this class. Subclasses
should just need to specify how packets are delivered and what means closing the connection.

@author Gaston Dombiak
xmppserver/src/main/java/org/jivesoftware/openfire/net/VirtualConnection.java