@Override
  public String toString() {
    final boolean isDebugEnabled = logger.isTraceEnabled(LogMarker.BRIDGE_SERVER_VERBOSE);
    return "FilterProfile(id=" + (isLocalProfile ? "local" : memberID) + ";  numCQs: "
        + ((cqCount == null) ? 0 : cqCount.get())
        + (isDebugEnabled ? (";  " + getClientMappingString()) : "")
        + (isDebugEnabled ? (";  " + getCqMappingString()) : "") + ")";
  }
When clients are registered they are assigned a Long identifier. This method maps between the
real client ID and its Long identifier.
geode-core/src/main/java/org/apache/geode/internal/cache/FilterProfile.java