Once your templates have been properly compiled into Kermeta files, you can call the generate(...) method into your main Kermeta code to generate the text.

package root_package;
require kermeta
require "templates/generator.kmt"
using kermeta::standard
using kermeta::utils
using hello_world
class Main{
operation main() : Void is do
	// Generator initialization
	var gen : Hello_World init Hello_World.new

	// Displays text generated on the console output
	stdio.writeln(gen.generate())
end
}