code: function(record, properties, referenced_record_id) {
  
  		properties[this._name] = this._referenced_module.getRecordById(referenced_record_id) || null;
  
  		if (properties[this._name]) {
  
  			this._registerRecord(record, properties[this._name]);
  
  		}
  
  	}
docs: Update value of this field in local `record` and add the record to field's internal collections
  @param {Lava.data.Record} record The local record
  @param {Object} properties The properties of local record
  @param {string} referenced_record_id The id of foreign record, which it belongs to