@get:Classpath
    val pluginJars: SortedSet<File>
        get() = filesIn("lib/plugins/*.jar")

    private
    fun filesIn(glob: String) = gradleHomeDir.asFileTree.matching {
        include(glob)
    }.files.toSortedSet()

    @get:Classpath
    val jars: SortedSet<File>
        get() = localRepo.asFileTree.matching {
            include("**/*.jar")
            exclude("**/*-javadoc.jar")
        }.files.toSortedSet()

    /**
     * Make sure this stays type FileCollection (lazy) to avoid losing dependency information.
     */
    @get:InputFiles
    @get:PathSensitive(PathSensitivity.RELATIVE)

  }

  public void testToSortedSet() {
    assertThat(fluent(1, 4, 2, 3).toSortedSet(Ordering.<Integer>natural().reverse()))
        .containsExactly(4, 3, 2, 1)
        .inOrder();
  }

  public void testToSortedSet_removeDuplicates() {
    assertThat(fluent(1, 4, 1, 3).toSortedSet(Ordering.<Integer>natural().reverse()))
        .containsExactly(4, 3, 1)
        .inOrder();
  }

  }

  public void testToSortedSet() {
    assertThat(fluent(1, 4, 2, 3).toSortedSet(Ordering.<Integer>natural().reverse()))
        .containsExactly(4, 3, 2, 1)
        .inOrder();
  }

  public void testToSortedSet_removeDuplicates() {
    assertThat(fluent(1, 4, 1, 3).toSortedSet(Ordering.<Integer>natural().reverse()))
        .containsExactly(4, 3, 1)
        .inOrder();
  }

   * {@code comparator.compare(x, y) == 0}) removed. To produce an {@code ImmutableSortedSet} sorted
   * by its natural ordering, use {@code toSortedSet(Ordering.natural())}.
   *
   * <p><b>{@code Stream} equivalent:</b> pass {@link ImmutableSortedSet#toImmutableSortedSet} to
   * {@code stream.collect()}.
   *

   * {@code comparator.compare(x, y) == 0}) removed. To produce an {@code ImmutableSortedSet} sorted
   * by its natural ordering, use {@code toSortedSet(Ordering.natural())}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code ImmutableSortedSet.copyOf(comparator,
   * stream.iterator())}, or pass {@link ImmutableSortedSet#toImmutableSortedSet} to {@code