brooklyn-library/software/webapp/src/main/java/org/apache/brooklyn/entity/proxy/AbstractControllerImpl.java [474:493]:
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    protected String getAddressOfEntity(Entity member) {
        AttributeSensor<String> hostAndPortSensor = getHostAndPortSensor();
        if (hostAndPortSensor != null) {
            String result = member.getAttribute(hostAndPortSensor);
            if (result != null) {
                return result;
            } else {
                LOG.error("No host:port set for {} (using attribute {}); skipping in {}", 
                        new Object[] {member, hostAndPortSensor, this});
                return null;
            }
        } else {
            String ip = member.getAttribute(getHostnameSensor());
            Integer port = member.getAttribute(getPortNumberSensor());
            if (ip!=null && port!=null) {
                return ip+":"+port;
            }
            LOG.error("Unable to construct hostname:port representation for {} ({}:{}); skipping in {}", 
                    new Object[] {member, ip, port, this});
            return null;
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brooklyn-library/software/webapp/src/main/java/org/apache/brooklyn/entity/proxy/AbstractNonProvisionedControllerImpl.java [254:273]:
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    protected String getAddressOfEntity(Entity member) {
        AttributeSensor<String> hostAndPortSensor = getHostAndPortSensor();
        if (hostAndPortSensor != null) {
            String result = member.getAttribute(hostAndPortSensor);
            if (result != null) {
                return result;
            } else {
                LOG.error("No host:port set for {} (using attribute {}); skipping in {}", 
                        new Object[] {member, hostAndPortSensor, this});
                return null;
            }
        } else {
            String ip = member.getAttribute(getHostnameSensor());
            Integer port = member.getAttribute(getPortNumberSensor());
            if (ip!=null && port!=null) {
                return ip+":"+port;
            }
            LOG.error("Unable to construct hostname:port representation for {} ({}:{}); skipping in {}", 
                    new Object[] {member, ip, port, this});
            return null;
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