racle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="InternetHeaders.InternetHeader.html" title="class in jakarta.mail.internet">InternetHeaders.InternetHeader</a>&gt;</span>&nbsp;<span class="element-name">headers</span></div>
<div class="block">The actual list of Headers, including placeholder entries.
 Placeholder entries are Headers with a null value and
 are never seen by clients of the InternetHeaders cla