opaRespBytes, err := io.ReadAll(resp.Body)
	if err != nil {
		return false, err
	}

	// Handle large OPA responses when OPA URL is of
	// form http://localhost:8181/v1/data/httpapi/authz
	type opaResultAllow struct {
		Result struct {
			Allow bool `json:"allow"`
		} `json:"result"`
	}

	// Handle simpler OPA responses when OPA URL is of
	// form http://localhost:8181/v1/data/httpapi/authz/allow

	opaRespBytes, err := io.ReadAll(resp.Body)
	if err != nil {
		return false, err
	}

	// Handle large OPA responses when OPA URL is of
	// form http://localhost:8181/v1/data/httpapi/authz
	type opaResultAllow struct {
		Result struct {
			Allow bool `json:"allow"`
		} `json:"result"`
	}

	// Handle simpler OPA responses when OPA URL is of
	// form http://localhost:8181/v1/data/httpapi/authz/allow

	// Check if config param requested is valid.
	defKVS, ok := DefaultKVS[subSys]
	if !ok {
		return
	}

	defValue, isFound := defKVS.Lookup(cfgParam)
	// Comments usually are absent from `defKVS`, so we handle it specially.
	if !isFound && cfgParam == Comment {
		defValue, isFound = "", true
	}
	if !isFound {
		return
	}

	if target == "" {
		target = Default
	}