difftastic/vendored_parsers/tree-sitter-hack/test/cases/expressions/function-pointers.exp

  (script
    (expression_statement
      (function_pointer
        (scoped_identifier
          (qualified_identifier
            (identifier))
          (identifier))
        (type_arguments)))
    (expression_statement
      (function_pointer
        (qualified_identifier
          (identifier))
        (type_arguments)))
    (expression_statement
      (function_pointer
        (qualified_identifier
          (identifier)
          (identifier)
          (identifier)
          (identifier))
        (type_arguments)))
    (expression_statement
      (function_pointer
        (qualified_identifier
          (identifier))
        (type_arguments
          (type_specifier)
          (type_specifier
            (qualified_identifier
              (identifier)))))))