validatemodel.validate(attributes, options) This method is left undefined and you're encouraged to override it with any custom validation

countBy

invert

keys

rest (tail, drop)

pluckcollection.pluck(attribute) Pluck an attribute from each model in the collection. Equivalent to calling map and

toArray

savemodel.save([attributes], [options]) Save a model to your database (or alternative persistence layer), by delegating to

reject

listenToobject.listenTo(other, event, callback) Tell an object to listen to a particular event on an other object.