def create_comment(ticket_id, input, options = {})
      make_request("tickets/#{ticket_id}", ({:update => Zendesk::Main.to_xml('comment', input)}), options)
    end
def create_comment(ticket_id, input, options = {})
      make_request("tickets/#{ticket_id}", ({:update => Zendesk::Main.to_xml('comment', input)}), options)
    end
example input {"value" => "my comment", "public" => true}