def self.write_one(object, writer, singular = nil)
singular ||= 'filter'
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_integer(writer, 'position', object.position) unless object.position.nil?
SchedulingPolicyUnitWriter.write_one(object.scheduling_policy_unit, writer, 'scheduling_policy_unit') unless object.scheduling_policy_unit.nil?
writer.write_end
end