You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: wait.rb
    path of file: ./repos/truffleruby/lib/truffle/io
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
# truffleruby_primitives: true

# Copyright (c) 2017, 2024 Oracle and/or its affiliates. All rights reserved. This
# code is released under a tri EPL/GPL/LGPL license. You can use it,
# redistribute it and/or modify it under the terms of the:
#
# Eclipse Public License version 2.0, or
# GNU General Public License version 2, or
# GNU Lesser General Public License version 2.1.

class IO
    
  def wait(*args)
    ensure_open

    if args.size != 2 || Primitive.is_a?(args[0], Symbol) || Primitive.is_a?(args[1], Symbol)
      # Slow/messy path:
      timeout = :undef
      events = 0
      args.each do |arg|
        if Primitive.is_a?(arg, Symbol)
          events |= case arg
                    when :r, :read, :readable then IO::READABLE
                    when :w, :write, :writable then IO::WRITABLE
                    when :rw, :read_write, :readable_writable then IO::READABLE | IO::WRITABLE
                    else
                      raise ArgumentError, "unsupported mode: #{arg}"
                    end

        elsif timeout == :undef
          timeout = arg
        else
          raise ArgumentError, 'timeout given more than once'
        end