String value = options.option(config.getLongOption()).getValue();
                applyTo(Integer.parseInt(value), settings, Origin.forCommandLine(config.getLongOption()));
            }
        }
    }

    public abstract void applyTo(int value, T settings, Origin origin);

			// the ADD operation is an absolute operation but provide a warning
			// indicating that the operation will be ignored when applyTo is set to ROUTE_CONFIGURATION,
			// or HTTP_ROUTE
			if patch.ApplyTo == network.EnvoyFilter_ROUTE_CONFIGURATION || patch.ApplyTo == network.EnvoyFilter_HTTP_ROUTE {
				// provide an error message indicating a mismatch between the operation type and the filter type

# If the patch operation is REMOVE and the applyTo is set to ROUTE_CONFIGURATION or HTTP_ROUTE, then an error will occur 
apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: test-remove-1
  namespace: bookinfo
spec:
  workloadSelector:
    labels:
      app: mysvc1
  configPatches:
  - applyTo: NETWORK_FILTER # http connection manager is a filter in Envoy
    match:
      context: GATEWAY
      listener:

metadata:
  name: test-relative-1
  namespace: bookinfo
spec:
  workloadSelector:
    labels:
      app: reviews1
  configPatches:
    # The first patch adds the Lua filter to the listener/http connection manager
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_INBOUND
      listener:
        portNumber: 8080
        filterChain:
          filter:
            name: "envoy.filters.network.http_connection_manager"

kind: EnvoyFilter
metadata:
  name: filter-ratelimit
  namespace: istio-system
spec:
  workloadSelector:
    labels:
      app: clt
  configPatches:
    # The Envoy config you want to modify
    - applyTo: HTTP_FILTER
      match:
        context: SIDECAR_OUTBOUND
        listener:
          filterChain:
            filter:
              name: "envoy.filters.network.http_connection_manager"
              subFilter:

        }

        @Override
        public void applyTo(String value, BuildLayoutParameters settings, Origin origin) {
            Transformer<File, String> resolver = new BasicFileResolver(settings.getCurrentDir());
            settings.setGradleUserHomeDir(resolver.transform(value));

	"istio.io/istio/pkg/util/protomarshal"
)

// nolint: interfacer
func BuildXDSObjectFromStruct(applyTo networking.EnvoyFilter_ApplyTo, value *structpb.Struct, strict bool) (proto.Message, error) {
	if value == nil {
		// for remove ops
		return nil, nil
	}
	var obj proto.Message
	switch applyTo {
	case networking.EnvoyFilter_CLUSTER:
		obj = &cluster.Cluster{}
	case networking.EnvoyFilter_LISTENER:

        for (CommandLineOptionConfiguration config : commandLineOptionConfigurations) {
            if (options.hasOption(config.getLongOption())) {
                applyTo(settings, Origin.forCommandLine(config.getLongOption()));
            }
        }
    }

    public abstract void applyTo(T settings, Origin origin);

metadata:
  name: test-reviews-lua-1
  namespace: bookinfo
spec:
  workloadSelector:
    labels:
      app: reviews
  configPatches:
    # The first patch adds the lua filter to the listener/http connection manager
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_INBOUND
      listener:
        portNumber: 8080
        filterChain:
          filter:
            name: "envoy.filters.network.http_connection_manager"

            if (options.hasOption(config.getLongOption())) {
                String value = options.option(config.getLongOption()).getValue();
                applyTo(value, settings, Origin.forCommandLine(config.getLongOption()));
            }
        }
    }

    public abstract void applyTo(String value, T settings, Origin origin);