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<!-- EMBER_CLI_FASTBOOT_TITLE -->  <meta name="ember-cli-head-start" content>  <title>Classes and Instances - The Object Model - Ember Guides</title>

  <meta name="description" content="As you learn about Ember, you'll see code like Component.extend() and DS.Model.extend(). Here, you'll learn about this extend() method, as well as other major features of the Ember object model. Defini