FxFacesMessages represents a collection of one ore more FxFacesMessage that have the same
summary and the same severity.
The messages can be obtained using the getMessages() function.
author: Gregor Schober (gregor.schober@flexive.com), UCS - unique computing solutions gmbh (http://www.ucs.at)
Returns true if at least one message contains a detail error message.
true if at least one message contains a detail error message. See Also: FacesMessage.getDetail