php__osinetextension/features/extensions/services.xml

<?xml version="1.0" ?>
<container
  xmlns="http://symfony.com/schema/dic/services"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
  <services>
    <service id="behat.mink" class="Behat\Mink\Mink" />

    <service id="mink.context.initializer" class="MinkAwareInitializer">
      <argument type="service" id="behat.mink" />
      <tag name="behat.context.initializer" />
    </service>

    <service id="mink.context.class_guesser" class="MinkContextClassGuesser">
      <tag name="behat.context.class_guesser" priority="-1" />
    </service>
  </services>
</container>