policyToRule := map[string]map[string]struct{}{}

	addPolicy := func(action rbacpb.RBAC_Action, name string, rule string) {
		if actionToPolicy[action] == nil {
			actionToPolicy[action] = map[string]struct{}{}
		}
		if policyToRule[name] == nil {
			policyToRule[name] = map[string]struct{}{}
		}
		actionToPolicy[action][name] = struct{}{}
		policyToRule[name][rule] = struct{}{}

	IPMatcher = "type.googleapis.com/xds.type.matcher.v3.IPMatcher"
)

// ListenerFilter is used to pass filter information into listener based config writer print functions
type ListenerFilter struct {
	Address string
	Port    uint32
	Type    string
	Verbose bool
}

// Verify returns true if the passed listener matches the filter fields
func (l *ListenerFilter) Verify(listener *listener.Listener) bool {