/*
   * These methods perform most headSet, subSet, and tailSet logic, besides parameter validation.
   */
  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> headSetImpl(C toElement, boolean inclusive);

  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> subSetImpl(

  /*
   * These methods perform most headSet, subSet, and tailSet logic, besides parameter validation.
   */
  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> headSetImpl(C toElement, boolean inclusive);

  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> subSetImpl(

        </module>
        <module name="MethodTypeParameterName">
            <property name="format" value="^[A-Z]+$"/>
        </module>

        <!-- Annotations -->
        <module name="MissingOverride"/>

        <!-- allows suppressing using the //CHECKSTYLE:ON //CHECKSTYLE:OFF -->
        <module name="SuppressionCommentFilter"/>
        <!-- to enable SuppressWarningsFilter -->