def dispatch void format(Greeting g, extension IFormattableDocument document) {
		document.addReplacer(new AbstractTextReplacer(document, g.regionFor.keyword("Hello")) {

			override createReplacements(ITextReplacerContext context) {
				context.addReplacement(region.replaceWith(region.text.toUpperCase))
				return context
			}

		})
	}

g.regionFor.keyword("Hello").replaceWith("HELLO");

domainmodel.allRegionsFor.keywords("package").forEach[p |
	p.replaceWith(p.text.toUpperCase)
]