==================
Simple Function
==================

function <> { "Hiya" }

---


(root
  (item
    (statement
      (expression
        (value
          (function
            (statement
              (expression
                (value
                  (string))))))))))

==================
Function Call
==================

foobar {"Hiya"}

---

(root
  (item
    (statement
      (expression
        (function_call
          (identifier)
          (expression
            (value
              (string))))))))

==================
Complex Function
==================

function <message, number> {
  output message
  output number
}

---

(root
  (item
    (statement
      (expression
        (value
          (function
            (identifier)
            (identifier)
            (statement
              (expression
                (identifier)))
            (statement
              (expression
                (identifier)))
            (statement
              (expression
                (identifier)))
            (statement
              (expression
                (identifier)))))))))