==========================
Type assertions
==========================

<A>b;
<C<D>>e.f;

---

(program
  (expression_statement (type_assertion
    (type_arguments (type_identifier))
    (identifier)))
  (expression_statement (type_assertion
    (type_arguments (generic_type
      (type_identifier)
      (type_arguments (type_identifier))))
    (member_expression
      (identifier)
      (property_identifier)))))
