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: forward_mode.rb
    path of file: ./repos/sup/lib/sup/modes
    
    the code of the file until where you have to start completion: module Redwood

class ForwardMode < EditMessageMode

  HookManager.register "forward-attribution", <<EOS
Generates the attribution for the forwarded message
(["--- Begin forwarded message from John Doe ---",
  "--- End forwarded message ---"])
Variables:
  message: a message object representing the message being replied to
    (useful values include message.from.mediumname and message.date)
Return value:
  A list containing two strings: the text of the begin line and the text of the end line
EOS
  ## TODO: share some of this with reply-mode
  def initialize opts={}
    header = {
      "From" => AccountManager.default_account.full_address,
    }

    @m = opts[:message]
    header["Subject"] =
      if @m
        "Fwd: " + @m.subj
      elsif opts[:attachments]
        "Fwd: " + opts[:attachments].keys.join(", ")
      end

    header["To"] = opts[:to].map { |p| p.full_address }.join(", ") if opts[:to]
    header["Cc"] = opts[:cc].map { |p| p.full_address }.join(", ") if opts[:cc]
    header["Bcc"] = opts[:bcc].map { |p| p.full_address }.join(", ") if opts[
    
  def self.spawn_nicely opts={}
    to = opts[:to] || (BufferManager.ask_for_contacts(:people, "To: ") or return if ($config[:ask_for_to] != false))
    cc = opts[:cc] || (BufferManager.ask_for_contacts(:people, "Cc: ") or return if $config[:ask_for_cc])
    bcc = opts[:bcc] || (BufferManager.ask_for_contacts(:people, "Bcc: ") or return if $config[:ask_for_bcc])

    attachment_hash = {}
    attachments = opts[:attachments] || []

    if(m = opts[:message])
      m.load_from_source! # read the full message in. you know, maybe i should just make Message#chunks do this....
      attachments += m.chunks.select { |c| c.is_a?(Chunk::Attachment) && !c.quotable? }
    end

    attachments.each do |c|
      mime_type = MIME::Types[c.content_type].first || MIME::Types["application/octet-stream"].first
      attachment_hash[c.filename] = RMail::Message.make_attachment c.raw_content, mime_type.content_type, mime_type.encoding, c.filename
    end

    mode = ForwardMode.new :message => opts[:message], :to => to, :cc => cc, :bcc => bcc, :attachments => attachment_hash

    title = "Forwarding " +
      if opts[:message]
        opts[:message].subj
      elsif attachments
        attachment_hash.keys.join(", ")
      else
        "something"
      end