in taverna-gis-activity/src/main/java/org/apache/taverna/gis/GisActivityHealthChecker.java [40:46]
public boolean canVisit(Object o) {
// Return True if we can visit the object. We could do
// deeper (but not time consuming) checks here, for instance
// if the health checker only deals with GisActivity where
// a certain configuration option is enabled.
return o instanceof GisActivity;
}