<?xml version="1.0"?> <!-- Providers for workgroup extensions --> <smackProviders> <!-- XEP-0280 Message Carbons --> <extensionProvider> <elementName>sent</elementName> <namespace>urn:xmpp:carbons:2</namespace> <className>org.jivesoftware.smackx.carbons.provider.CarbonManagerProvider</className> </extensionProvider> <extensionProvider> <elementName>received</elementName> <namespace>urn:xmpp:carbons:2</namespace> <className>org.jivesoftware.smackx.carbons.provider.CarbonManagerProvider</className> </extensionProvider> </smackProviders>