Define methods on mongoose Model, like you do on Schema?

I know you can define methods on the schema

var schema = new mongoose.Schema({});
schema.methods.method = function(){}

But is there a way define methods on the model

var model = mongoose.model('entities', schema);
model.methods? = ? function?(){}?

Basically I want to write some wrappers that I can use like so:

User.findByUsername('me', function(err, user){...});

You can have statics and instance methods. In you case, you need to define static methods :

schema.statics.method = function(){}

Have a look on the doc here : http://mongoosejs.com/docs/guide.html#methods