```
Parser::CurrentRuby.parse("super() { a }")
=> (block
  (super)
  (args)
  (send nil :a))
[6] pry(main)> Parser::CurrentRuby.parse("super() { a }")
=> (block
  (super)
  (args)
  (send nil :a))
[7] pry(main)> Parser::CurrentRuby.parse("super(a) { a }")
=> (block
  (super
    (send nil :a))
  (args)
  (send nil :a))
[8] pry(main)> Parser::CurrentRuby.parse("super(a, b) { a }")
=> (block
  (super
    (send nil :a)
    (send nil :b))
  (args)
  (send nil :a))
[9] pry(main)> Parser::CurrentRuby.parse("super { a }")
=> (block
  (zsuper)
  (args)
  (send nil :a))
```