    # 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