code: public void assertUniqueBeans(Set<String> ignoredDuplicateBeanNames) {
  		for (BeanohBeanFactoryMethodInterceptor callback : callbacks) {
  			Map<String, List<BeanDefinition>> beanDefinitionMap = callback
  					.getBeanDefinitionMap();
  			for (String key : beanDefinitionMap.keySet()) {
  				if (!ignoredDuplicateBeanNames.contains(key)) {
  					List<BeanDefinition> definitions = beanDefinitionMap
  							.get(key);
  					List<String> resourceDescriptions = new ArrayList<String>();
  					for (BeanDefinition definition : definitions) {
  						String resourceDescription = definition
  								.getResourceDescription();
  						if (resourceDescription == null) {
  							resourceDescriptions.add(definition.getBeanClassName());
  						}else if (!resourceDescription
  								.endsWith("-BeanohContext.xml]")) {
  							if(!resourceDescriptions.contains(resourceDescription)){
  								resourceDescriptions.add(resourceDescription);
  							}
  						}
  					}
  					if (resourceDescriptions.size() > 1) {
  						throw new DuplicateBeanDefinitionException("Bean '"
  								+ key + "' was defined "
  								+ resourceDescriptions.size() + " times.\n"
  								+ "Either remove duplicate bean definitions or ignore them with the 'ignoredDuplicateBeanNames' method.\n"
  								+ "Configuration locations:"
  								+ messageUtil.list(resourceDescriptions));
  					}
  				}
  			}
  		}
  	}
docs: This will fail if there are duplicate beans in the Spring context. Beans
  that are configured in the bootstrap context will not be considered
  duplicate beans.