An internal error occurred during: "Launching Foo".
These errors need to be fixed before the model can be serialized.
Model: Feature Model.name must be set.
Model: Feature Model. ... must be set.
...

[% var m = Model.allInstances();%]
	[% var contextName: String; %]
	[% var i: Integer = 1; %] 
	[% while (i < m.size()) { %]
		[% contextName = m.at(i).name; %]
		context [%= contextName %] {
			...
		}		
		[% i = i + 1; %]
[%}%]

 var m = Model.allInstances(); 

var m = Model.allInstances();

m.eClass.select(c | c.name = "Greeting");

Greeting@Model.greetings

var root = M.resource.contents.first();
root.visit();

operation Any visit() {

  self.println();

  for (child in self.eContents()) {
    child.visit();
  }

}

[% var m = Model.allInstances();
	var seq = Sequence{0..m.size()-1};
	var index = seq.select(i: Integer | (i >= 0 and i < m.size() and m.at(i).eClass.name = "Greeting"));
	var contextName: String; %]
	[% var i: Integer = 0; %]	 
	[% while (i < index.size()) { %]
		[% contextName = m.at(index.at(i)).name; %]
		context [%= contextName %] {
			...
		}		
		[% i = i + 1; %]
	[%}%]

[%for (m in Greeting.all)){%]
	context [%= m.name %] {
		...
	}
[%}%]