Nickolay - KiokuJS-0.01
Class('KiokuJS.Exception.LookUp', { isa : 'KiokuJS.Exception', has : { id : { required : true }, backendName : { required : true }, description : 'Failed lookup attempt' }, methods : { getMesage : function () { return 'ID [' + this.id + '] not found in the backend [' + this.backendName + ']' } } })