tests/org.eclipse.core.tests.runtime/Plugin_Testing/orphan.4/testb/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<plugin
  name="Core Runtime Orphan Test 4 B"
  id="testb"
  version="1.0.0"
  vendor-name="OTI">

  <requires>
     <import plugin="testd"/>
  </requires>

</plugin>