public Set getKeysOfInterest(Object id) {
    if (!clientMap.hasWireID(id)) {
      return null;
    }
    return getKeysOfInterest().get(clientMap.getWireID(id));
  }
Returns the set of client interested keys.

@param id client identifier
@return client interested keys.
geode-core/src/main/java/org/apache/geode/internal/cache/FilterProfile.java