String dependencyVersion = qs.getLiteral("depVersion") == null ? null : qs.getLiteral(
"depVersion").getString();
String dependencyLicense = qs.getResource("depLicense") == null ? null : qs.getResource(
"depLicense").getURI();
dependencies.add(new Dependency(dependencyTitle, dependencyVersion, dependencyLicense));
prevInst = inst;
}
if (prevInst != null) {
Installation installation = new Installation(dependencies, environment);