code: function() {
      var model = this.definition.model
      var collection = model.include.apply(
        model,
        this.definition.store.utils.args(arguments)
      )
  
      // add the current record to the collection
      collection.addInternal('data_loaded', [this.clearRelations()]) // clear relations for start with a clean record
      collection.first()
  
      return collection
    }
docs: Include relations into the result
  @class Record
  @method include
  @param {array} includes - array of relation names to include
  @or
  @param {object} includes - for nested includes use objects
  
  @see Model.exec
  
  @return {Model}