public void unregisterClientInterest(String regionName, Object keyOfInterest,
      final @NotNull InterestType interestType,
      boolean isClosing, ClientProxyMembershipID membershipID, boolean keepalive) {
    if (logger.isDebugEnabled()) {
      logger.debug(
          "CacheClientNotifier: Client {} unregistering interest in: {} -> {} (an instance of {})",
          membershipID, regionName, keyOfInterest, keyOfInterest.getClass().getName());
    }
    CacheClientProxy proxy = getClientProxy(membershipID);
    if (proxy != null) {
      proxy.setKeepAlive(keepalive);
      proxy.unregisterClientInterest(regionName, keyOfInterest, interestType, isClosing);
    }
  }
Unregisters client interest in the input region and key.

@param regionName The name of the region of interest
@param keyOfInterest The name of the key of interest
@param isClosing Whether the caller is closing
@param membershipID The {@code ClientProxyMembershipID} of the client no longer interested
       in this {@code Region} and key
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheClientNotifier.java