save.proxy.plantuml

@startuml
title Proxy with Singleton for JSONConfigManager Access

interface IConfiguration {
    + getConfig(key: String): String
    + setConfig(key: String, value: String): void
}

class JSONConfigManager implements IConfiguration {
    - static instance: JSONConfigManager
    - config: Map<String, String>
    + getInstance(): JSONConfigManager
    + getConfig(key: String): String
    + setConfig(key: String, value: String): void
}

class ConfigurationProxy implements IConfiguration {
    - realConfig: JSONConfigManager
    + ConfigurationProxy()
    + checkAccess(): Boolean
    + getConfig(key: String): String
    + setConfig(key: String, value: String): void
}

ConfigurationProxy --> JSONConfigManager

@enduml