    # File lib/fog/aws/requests/compute/create_image.rb, line 54
            def create_image(instance_id, name, description, no_reboot = false, options = {})
              params = {}
              block_device_mappings = options[:block_device_mappings] || []
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.DeviceName', block_device_mappings.map{|mapping| mapping['DeviceName']})
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.NoDevice', block_device_mappings.map{|mapping| mapping['NoDevice']})
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.VirtualName', block_device_mappings.map{|mapping| mapping['VirtualName']})
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.Ebs.SnapshotId', block_device_mappings.map{|mapping| mapping['Ebs.SnapshotId']})
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.Ebs.DeleteOnTermination', block_device_mappings.map{|mapping| mapping['Ebs.DeleteOnTermination']})
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.Ebs.VolumeType', block_device_mappings.map{|mapping| mapping['Ebs.VolumeType']})
              params.merge!Fog::AWS.indexed_param('BlockDeviceMapping.%d.Ebs.Iops', block_device_mappings.map{|mapping| mapping['Ebs.Iops']})
              params.reject!{|k,v| v.nil?}

              reserved_ebs_root_device  = '/dev/sda1'
              block_devices = options.delete(:block_device_mappings) || []
              register_image_response = register_image(name, description, reserved_ebs_root_device, block_devices, options)

              response = Excon::Response.new
              if instance_id && !name.empty?
                response.status = 200
                response.body = {
                  'requestId' => Fog::AWS::Mock.request_id,
                  'imageId' => register_image_response.body['imageId']
                }
              else
                response.status = 400
                response.body = {
                  'Code' => 'InvalidParameterValue'
                }
                if name.empty?
                  response.body['Message'] = "Invalid value '' for name. Must be specified."
                end
              end
              response
            end