aconfig = new ActivationConfigMetaData();
aconfig.setActivationConfigProperties(props);
override.setActivationConfig(aconfig);
JBossMessageDrivenBeanMetaData merged = new JBossMessageDrivenBeanMetaData();
merged.merge(override, original);
aconfig = merged.getActivationConfig();
assertNotNull(aconfig);
props = aconfig.getActivationConfigProperties();
assertNotNull(props);
assertEquals(3, props.size());