src/java.base/share/classes/java/util/concurrent/ConcurrentSkipListMap.java

*** 99,109 ****
   * <em>not</em> permit the use of {@code null} keys or values because some
   * null return values cannot be reliably distinguished from the absence of
   * elements.
   *
   * <p>This class is a member of the
!  * <a href="{@docRoot}/java/util/package-summary.html#CollectionsFramework">
   * Java Collections Framework</a>.
   *
   * @author Doug Lea
   * @param <K> the type of keys maintained by this map
   * @param <V> the type of mapped values
--- 99,109 ----
   * <em>not</em> permit the use of {@code null} keys or values because some
   * null return values cannot be reliably distinguished from the absence of
   * elements.
   *
   * <p>This class is a member of the
!  * <a href="{@docRoot}/java.base/java/util/package-summary.html#CollectionsFramework">
   * Java Collections Framework</a>.
   *
   * @author Doug Lea
   * @param <K> the type of keys maintained by this map
   * @param <V> the type of mapped values