(Statements
  (Package
    (Identifier))
  (Function
    (Identifier)
    (Statements
      (Match
        (Statements)
        (Pattern
          (Identifier)
          (Call
            (Identifier)
            (Statements)
            (Empty))))
      (Match
        (Statements
          (Identifier))
        (Statements
          (Pattern
            (Statements
              (Integer)
              (Integer))
            (Statements
              (Call
                (Identifier)
                (Statements)
                (Empty))
              (Call
                (Identifier)
                (Statements)
                (Empty))
              (Pattern
                (Identifier)
                (Empty))))
          (DefaultPattern
            (Statements
              (Call
                (Identifier)
                (Statements)
                (Empty))
              (Break
                (Empty)))))))))