tests/org.eclipse.core.tests.runtime/Plugin_Testing/extensiveRequiresTest/oneRequiresTest.xml

<?xml version="1.0" encoding="UTF-8"?>
<plugin
  name="One Requires Test"
  id="oneRequiresTest"
  version="1.2"
  vendor-name="OTI">
  <requires>
     <import plugin="tests.b"/>
  </requires>
</plugin>