public Map<String, String> getConfigProperties() {
        Map<String, String> properties = new HashMap<>();
        for (Map.Entry<String, JsonPrimitive> entry : configStorage.entrySet()) {
            properties.put(entry.getKey(), entry.getValue().getAsString());
        }
        return properties;
    }
get key-value map properties from config file
inlong-agent/agent-common/src/main/java/org/apache/inlong/agent/conf/AbstractConfiguration.java