====================
Interface
====================

interface Example {}

---

(source_file
  (interface_declaration
    name: (identifier)
    body: (contract_body)))



====================
Inheriting inteface
====================

interface Example is NotAContract() {}

---

(source_file
  (interface_declaration
    name: (identifier)
    (inheritance_specifier ancestor: (identifier))
    body: (contract_body)))

====================
Multiple Inheritance Interface
====================

interface Example is NotAContract(), AContract(1) {}

---

(source_file
  (interface_declaration
    name: (identifier)
    (inheritance_specifier ancestor: (identifier))
    (inheritance_specifier 
      ancestor: (identifier)
      ancestor_arguments: (number_literal))
    body: (contract_body)))
