class Foo {
  method0() { return "no args"; }
  method1(a) { return a; }
  method2(a, b) { return a + b; }
  method3(a, b, c) { return a + b + c; }
  method4(a, b, c, d) { return a + b + c + d; }
  method5(a, b, c, d, e) { return a + b + c + d + e; }
  method6(a, b, c, d, e, f) { return a + b + c + d + e + f; }
  method7(a, b, c, d, e, f, g) { return a + b + c + d + e + f + g; }
  method8(a, b, c, d, e, f, g, h) { return a + b + c + d + e + f + g + h; }
}

var foo = Foo();
print(foo.method0()); # expect: no args
print(foo.method1(1)); # expect: 1
print(foo.method2(1, 2)); # expect: 3
print(foo.method3(1, 2, 3)); # expect: 6
print(foo.method4(1, 2, 3, 4)); # expect: 10
print(foo.method5(1, 2, 3, 4, 5)); # expect: 15
print(foo.method6(1, 2, 3, 4, 5, 6)); # expect: 21
print(foo.method7(1, 2, 3, 4, 5, 6, 7)); # expect: 28
print(foo.method8(1, 2, 3, 4, 5, 6, 7, 8)); # expect: 36