# File lib/fog/identity/openstack/v2/requests/list_ec2_credentials.rb, line 23
          def list_ec2_credentials(options = {})
            if options.kind_of?(Hash)
              user_id = options.delete(:user_id)
              query = options
            else
              Fog::Logger.deprecation('Calling OpenStack[:identity].list_ec2_credentials(user_id) is deprecated, use .list_ec2_credentials(:user_id => value)')
              user_id = options
              query = {}
            end

            request(
              :expects => [200, 202],
              :method  => 'GET',
              :path    => "users/#{user_id}/credentials/OS-EC2",
              :query   => query
            )
          end