def part
      client.user_reply :part, channel
      if stream
        stream.close if stream.respond_to?(:close) # EM/em-http-request gem is installed and uses .close
        stream.close_connection if stream.respond_to?(:close_connection)
      end
      room.leave
    end
def part
      client.user_reply :part, channel
      if stream
        stream.close if stream.respond_to?(:close) # EM/em-http-request gem is installed and uses .close
        stream.close_connection if stream.respond_to?(:close_connection)
      end
      room.leave
    end
Public: "leaves" a campfire room, per the PART irc command.
 Confirms with the connected client to PART the channel.