def close(number)
      request = server.get_request_by_number(number)
      repo = server.source_repo
      server.close_issue(repo, request.number)
      unless server.request_exists?('open', request.number)
        puts 'Successfully closed request.'
      end
    end
def close(number)
      request = server.get_request_by_number(number)
      repo = server.source_repo
      server.close_issue(repo, request.number)
      unless server.request_exists?('open', request.number)
        puts 'Successfully closed request.'
      end
    end
Close a specified request.