// Test built-in Box inheritance with P2PBox box ChatNode from P2PBox { init { chatHistory } pack(nodeId, world) { from P2PBox.pack(nodeId, world) me.chatHistory = new ArrayBox() } override send(intent, data, target) { // Log chat message me.chatHistory.push({ "from": me.get_node_id(), "to": target, "message": data }) // Call parent send method from P2PBox.send(intent, data, target) } getChatHistory() { return me.chatHistory } } // Test with MathBox box ScientificCalc from MathBox { init { history } pack() { from MathBox.pack() me.history = [] } override sin(x) { local result result = from MathBox.sin(x) me.history.push("sin(" + x.toString() + ") = " + result.toString()) return result } getHistory() { return me.history } } // Main test static box Main { main() { local console console = new ConsoleBox() console.log("Testing built-in Box inheritance...") // Test MathBox inheritance local calc calc = new ScientificCalc() local result result = calc.sin(3.14159 / 2) console.log("Sin(π/2) = " + result.toString()) console.log("Calculation history: " + calc.getHistory().toString()) console.log("✅ Built-in Box inheritance test complete!") } }