var rules = Permissions.createRules(['view', 'modify', 'create', 'delete']);
var permissions = Permissions.createPermissions([rules.modify, rules.delete]);
console.log('#view', Permissions.checkForPermission(permissions, rules.view)); // false
console.log('#modify', Permissions.checkForPermission(permissions, rules.modify)); // true
console.log('#create', Permissions.checkForPermission(permissions, rules.create)); // false
console.log('#delete', Permissions.checkForPermission(permissions, rules.delete)); // true