return super.entries();
  }

  /**
   * Returns a view collection of all <i>distinct</i> keys contained in this multimap. Note that the
   * key set contains a key if and only if this multimap maps that key to at least one value.
   *
   * <p>The iterator generated by the returned set traverses the keys in the order they were first
   * added to the multimap.
   *

   * mode}.
   *
   * <p>For the case of {@link RoundingMode#HALF_EVEN}, this implementation uses the IEEE 754
   * default rounding mode: if the two nearest representable values are equally near, the one with
   * the least significant bit zero is chosen. (In such cases, both of the nearest representable
   * values are even integers; this method returns the one that is a multiple of a greater power of
   * two.)
   *

    List<byte[]> ordered =
        Arrays.asList(
            new byte[] {},
            new byte[] {LEAST},
            new byte[] {LEAST, LEAST},
            new byte[] {LEAST, (byte) 1},
            new byte[] {(byte) 1},
            new byte[] {(byte) 1, LEAST},
            new byte[] {GREATEST, GREATEST - (byte) 1},
            new byte[] {GREATEST, GREATEST},

    TopKSelector<Integer> top = TopKSelector.least(0);
    for (int i = 0; i < 10; i++) {
      top.offer(i);
    }
    assertThat(top.topK()).isEmpty();
  }

  public void testNoElementsOffered() {
    TopKSelector<Integer> top = TopKSelector.least(10);
    assertThat(top.topK()).isEmpty();
  }

  public void testOfferedFewerThanK() {
    TopKSelector<Integer> top = TopKSelector.least(10);
    top.offer(3);
    top.offer(5);

    List<int[]> ordered =
        Arrays.asList(
            new int[] {},
            new int[] {LEAST},
            new int[] {LEAST, LEAST},
            new int[] {LEAST, (int) 1L},
            new int[] {(int) 1L},
            new int[] {(int) 1L, LEAST},
            new int[] {GREATEST, (GREATEST - (int) 1L)},
            new int[] {GREATEST, GREATEST},

    List<long[]> ordered =
        Arrays.asList(
            new long[] {},
            new long[] {LEAST},
            new long[] {LEAST, LEAST},
            new long[] {LEAST, (long) 1},
            new long[] {(long) 1},
            new long[] {(long) 1, LEAST},
            new long[] {GREATEST, GREATEST - (long) 1},
            new long[] {GREATEST, GREATEST},

    List<double[]> ordered =
        Arrays.asList(
            new double[] {},
            new double[] {LEAST},
            new double[] {LEAST, LEAST},
            new double[] {LEAST, (double) 1},
            new double[] {(double) 1},
            new double[] {(double) 1, LEAST},
            new double[] {GREATEST, Double.MAX_VALUE},
            new double[] {GREATEST, GREATEST},

    List<double[]> ordered =
        Arrays.asList(
            new double[] {},
            new double[] {LEAST},
            new double[] {LEAST, LEAST},
            new double[] {LEAST, (double) 1},
            new double[] {(double) 1},
            new double[] {(double) 1, LEAST},
            new double[] {GREATEST, Double.MAX_VALUE},
            new double[] {GREATEST, GREATEST},

   * ascending order.
   *
   * @throws IllegalArgumentException if {@code k < 0} or {@code k > Integer.MAX_VALUE / 2}
   */
  public static <T extends Comparable<? super T>> TopKSelector<T> least(int k) {
    return least(k, Ordering.natural());
  }

  /**
   * Returns a {@code TopKSelector} that collects the lowest {@code k} elements added to it,

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Static methods pertaining to sorted {@link List} instances.
 *
 * <p>In this documentation, the terms <i>greatest</i>, <i>greater</i>, <i>least</i>, and
 * <i>lesser</i> are considered to refer to the comparator on the elements, and the terms
 * <i>first</i> and <i>last</i> are considered to refer to the elements' ordering in a list.
 *
 * @author Louis Wasserman
 */