private DiscoInfoProvider getProvider(String name) {
        return entities.get(name);
    }
Returns the DiscoInfoProvider responsible for providing information about a given entity or
null if none was found.

@param name the name of the identity.
@return the DiscoInfoProvider responsible for providing information about a given entity or
        null if none was found.
xmppserver/src/main/java/org/jivesoftware/openfire/disco/IQDiscoInfoHandler.java