public static DeveloperAlreadyExistsException developerAlreadyExistsException(String developerId) {
        return new DeveloperAlreadyExistsException(Messages.i18n.format("DeveloperAlreadyExists", developerId)); //$NON-NLS-1$
    }
Creates an exception if the developer already exists.
@return the exception
manager/api/exceptions/src/main/java/io/apiman/manager/api/rest/exceptions/util/ExceptionFactory.java