def self.write_one(object, writer, singular = nil)
singular ||= 'affinity_label'
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, 'comment', object.comment) unless object.comment.nil?
Writer.write_string(writer, 'description', object.description) unless object.description.nil?
Writer.write_string(writer, 'name', object.name) unless object.name.nil?
Writer.write_boolean(writer, 'read_only', object.read_only) unless object.read_only.nil?
HostWriter.write_many(object.hosts, writer, 'host', 'hosts') unless object.hosts.nil?
VmWriter.write_many(object.vms, writer, 'vm', 'vms') unless object.vms.nil?
writer.write_end
end