(Program
  (Module
    (Identifier))
  (Function
    (Identifier)
    (Args)
    (VarDecl
      (Other "expression_list"
        (Identifier))
      (Other "expression_list"
        (Operator
          (Other "composite_literal"
            (Identifier)
            (Pair
            { (Identifier)
            ->(Identifier) }
            { (Identifier)
            ->(FunctionCall
                (Identifier)
                (QualifiedIdentifier)) })))))))