# File lib/fog/aws/requests/compute/revoke_security_group_ingress.rb, line 43
        def revoke_security_group_ingress(group_name, options = {})
          options = Fog::AWS.parse_security_group_options(group_name, options)

          if ip_permissions = options.delete('IpPermissions')
            options.merge!(indexed_ip_permissions_params(ip_permissions))
          end

          request({
            'Action'    => 'RevokeSecurityGroupIngress',
            :idempotent => true,
            :parser     => Fog::Parsers::Compute::AWS::Basic.new
          }.merge!(options))
        end