def self.write_one(object, writer, singular = nil)
singular ||= 'host_device'
writer.write_start(singular)
href = object.href
writer.write_attribute('href', href) unless href.nil?
writer.write_attribute('id', object.id) unless object.id.nil?
Writer.write_string(writer, 'capability', object.capability) unless object.capability.nil?
Writer.write_string(writer, 'comment', object.comment) unless object.comment.nil?
Writer.write_string(writer, 'description', object.description) unless object.description.nil?
Writer.write_integer(writer, 'iommu_group', object.iommu_group) unless object.iommu_group.nil?
Writer.write_string(writer, 'name', object.name) unless object.name.nil?
HostDeviceWriter.write_one(object.physical_function, writer, 'physical_function') unless object.physical_function.nil?
Writer.write_boolean(writer, 'placeholder', object.placeholder) unless object.placeholder.nil?
ProductWriter.write_one(object.product, writer, 'product') unless object.product.nil?
VendorWriter.write_one(object.vendor, writer, 'vendor') unless object.vendor.nil?
Writer.write_integer(writer, 'virtual_functions', object.virtual_functions) unless object.virtual_functions.nil?
HostWriter.write_one(object.host, writer, 'host') unless object.host.nil?
HostDeviceWriter.write_one(object.parent_device, writer, 'parent_device') unless object.parent_device.nil?
VmWriter.write_one(object.vm, writer, 'vm') unless object.vm.nil?
writer.write_end
end