// It is a wrapper of func keepOrDeleteNullInObj
func keepOrDeleteNullInJsonPatch(patch []byte, keepNull bool) ([]byte, map[string]interface{}, error) {
	var patchMap map[string]interface{}
	err := json.Unmarshal(patch, &patchMap)
	if err != nil {
		return nil, nil, err
	}
	filteredMap, err := keepOrDeleteNullInObj(patchMap, keepNull)
	if err != nil {
		return nil, nil, err
	}