Multimap<String, Integer> instrumentableLines) {
JsObjectLiteral baseline = new JsObjectLiteral(info);
List<JsPropertyInitializer> properties = baseline.getPropertyInitializers();
for (String filename : instrumentableLines.keySet()) {
JsPropertyInitializer pair = new JsPropertyInitializer(info);
pair.setLabelExpr(new JsStringLiteral(info, filename));
JsObjectLiteral lines = new JsObjectLiteral(info);
List<JsPropertyInitializer> coverage = lines.getPropertyInitializers();
for (int line : instrumentableLines.get(filename)) {
coverage.add(new JsPropertyInitializer(info,
new JsNumberLiteral(info, line), new JsNumberLiteral(info, 0)));