/**
* Iterates over all known {@link GraphItem}s and asks for their {@link
* GraphItem#getCapability(CapabilityName) capability} to support <code>name</code>.
*
* @param name the capability to search
* @return all the available capabilities
*/
public <T> List<T> getCapabilities(CapabilityName<T> name) {
if (graph == null) {
return Collections.emptyList();
}
List<T> result = new ArrayList<>();
for (GraphItem item : graph.getItems()) {
T capability = item.getCapability(name);
if (capability != null) {
result.add(capability);
}
}
return result;
}
