* Change expected type from the `HeaderMapper` to the `AmqpHeaderMapper` * Add 'header-mapper' mutually exclusivity failing tests * Change AMQP doc to reference `AmqpHeaderMapper` not `HeaderMapper` JIRA: https://jira.springsource.org/browse/INT-2971 INT-2971 Polishing Polish schema docs; add info about STANDARD_*_HEADERS.