 of an attribute returned by the server does not
match the type you would like to use in your JavaScript code. Ember
Data allows you to define simple serialization and deserialization
methods for attribute types called transforms. You can specify that
you would like a transform to run for an attribute by providing the
transform name as the first argument to the <code>DS.attr</code> method. Ember Data
supports attribute types of <code>string</code>, <code>number</code>, <code>boolean</code>, and <code>date</