--- /dev/null
+package jalview.ws;
+
+import java.util.Collection;
+import java.util.EventListener;
+
+import jalview.ws.api.ServiceWithParameters;
+
+@FunctionalInterface
+public interface ServiceChangeListener extends EventListener
+{
+ public void servicesChanged(WSDiscovererI discoverer,
+ Collection<? extends ServiceWithParameters> services);
+}