Used to obtain a
Messages instance for a particular component, within a particular
locale. If the component extends from another component, then its localized properties will
merge with its parent's properties (with the subclass overriding the super class on any
conflicts).
Parameters: MessagesBundle - defines the set of properties files to read, as well as a series of parent bundlesto extend and override Parameters: locale - the message catalog for the bundle, in the indicated locale