Another test of closure.

tests/extended_closure.aer

@@ -0,0 +1,24 @@
+class Dog {
+	public string $name;
+	public string $color;
+
+	public void __construct(string $name, string $color) {
+		$this->name = $name;
+		$this->color = $color;
+	}
+
+	public callback greet(string $greeting) {
+		return void() using ($greeting) {
+			print("$greeting, I am a {$this->color} dog named {$this->name}\n");
+		};
+	}
+}
+
+class Program {
+
+	void main() {
+		object $dog = new Dog('Alex', 'red');
+		callback $c = $dog->greet('Hello');
+		$c();
+	}
+}