Map<String, Set<String>> requirements = featuresService.listRequirements();
ShellTable table = new ShellTable();
table.column("Region");
table.column("Requirement");
table.emptyTableText("No requirements defined");
for (Map.Entry<String, Set<String>> entry : requirements.entrySet()) {
for (String requirement : entry.getValue()) {
table.addRow().addContent(entry.getKey(), requirement);
}