Clameurs/sites/all/modules/contrib/fields/entityreference/examples/entityreference_behavior_example/plugins/behavior/test_instance_behavior.inc

<?php

$plugin = array(
  'title' => t('Test instance behavior'),
  'class' => 'EntityReferenceInstanceBehaviorExample',
  'weight' => 10,
  'behavior type' => 'instance',
);