* weak, or phantom references.
   *
   * @param backingMap place to store the mapping from each row key to its corresponding column key
   *     / value map
   * @param factory supplier of new, empty maps that will each hold all column key / value mappings
   *     for a given row key
   * @throws IllegalArgumentException if {@code backingMap} is not empty
   * @since 10.0
   */

            });
            if (putMappingResponse.isAcknowledged()) {
                logger.info("Created {} mapping.", index);
            } else {
                logger.warn("Failed to create {} mapping.", index);
            }
        } else if (logger.isDebugEnabled()) {
            logger.debug("{} mapping exists.", index);
        }
    }

      iterator.remove();
      assertEquals(initialSize - 1, map.size());
      // (We can't assert that the values collection no longer contains the
      // removed value, because the underlying map can have multiple mappings
      // to the same value.)
      assertInvariants(map);
      assertThrows(IllegalStateException.class, () -> iterator.remove());
    } else {
      iterator.next();

    return new HashBiMap<>(expectedSize);
  }

  /**
   * Constructs a new bimap containing initial values from {@code map}. The bimap is created with an
   * initial capacity sufficient to hold the mappings in the specified map.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object> HashBiMap<K, V> create(
      Map<? extends K, ? extends V> map) {
    HashBiMap<K, V> bimap = create(map.size());

          test.remove(rangeToRemove);
          verify(model, test);
        }
      }
    }
  }

  // identical to testPutTwoAndRemove,
  // verifies that putCoalescing() doesn't cause any mappings to change relative to put()
  public void testPutCoalescingTwoAndRemove() {
    for (Range<Integer> rangeToPut1 : RANGES) {
      for (Range<Integer> rangeToPut2 : RANGES) {

// Fetches any input mappings requested via
// TF_ImportGraphDefOptionsAddInputMapping() that didn't appear in the GraphDef
// and weren't used as input to any node in the imported graph def. The number
// of fetched mappings is returned in `num_missing_unused_input_mappings`. The
// array of each mapping's source node name is returned in `src_names`, and the
// array of each mapping's source index is returned in `src_indexes`.
//

        "filter" : ["lowercase", "content_length_filter", "limit_token_count_filter"]
      }
    },
    "char_filter" : {
      "mapping_char" : {
        "type" : "mapping",
        "mappings" : ["ｶﾞ=>ガ", "ｷﾞ=>ギ", "ｸﾞ=>グ", "ｹﾞ=>ゲ", "ｺﾞ=>ゴ", "ｻﾞ=>ザ", "ｼﾞ=>ジ", "ｽﾞ=>ズ", "ｾﾞ=>ゼ", "ｿﾞ=>ゾ", "ﾀﾞ=>ダ", "ﾁﾞ=>ヂ", "ﾂﾞ=>ヅ",

        "filter" : ["lowercase", "content_length_filter", "limit_token_count_filter"]
      }
    },
    "char_filter" : {
      "mapping_char" : {
        "type" : "mapping",
        "mappings" : ["ｶﾞ=>ガ", "ｷﾞ=>ギ", "ｸﾞ=>グ", "ｹﾞ=>ゲ", "ｺﾞ=>ゴ", "ｻﾞ=>ザ", "ｼﾞ=>ジ", "ｽﾞ=>ズ", "ｾﾞ=>ゼ", "ｿﾞ=>ゾ", "ﾀﾞ=>ダ", "ﾁﾞ=>ヂ", "ﾂﾞ=>ヅ",

    return createInstance(factory, tentativeArgs).hashCode()
        == createInstance(factory, args).hashCode();
  }

  // distinctValues is a type-safe class-values mapping, but we don't have a type-safe data
  // structure to hold the mappings.
  @SuppressWarnings({"unchecked", "rawtypes"})
  private FreshValueGenerator newFreshValueGenerator() {
    FreshValueGenerator generator =
        new FreshValueGenerator() {

        "filter" : ["lowercase", "content_length_filter", "limit_token_count_filter"]
      }
    },
    "char_filter" : {
      "mapping_char" : {
        "type" : "mapping",
        "mappings" : ["ｶﾞ=>ガ", "ｷﾞ=>ギ", "ｸﾞ=>グ", "ｹﾞ=>ゲ", "ｺﾞ=>ゴ", "ｻﾞ=>ザ", "ｼﾞ=>ジ", "ｽﾞ=>ズ", "ｾﾞ=>ゼ", "ｿﾞ=>ゾ", "ﾀﾞ=>ダ", "ﾁﾞ=>ヂ", "ﾂﾞ=>ヅ",