protected Entry<K, V> computeNext() {
          for (index++; index < maxIndex; index++) {
            V value = getValue(index);
            if (value != null) {
              return Maps.immutableEntry(getKey(index), value);
            }
          }
          return endOfData();
        }
      };
    }

    // redeclare to help optimizers with b/310253115

        protected Entry<K, V> computeNext() {
          for (index++; index < maxIndex; index++) {
            V value = getValue(index);
            if (value != null) {
              return Maps.immutableEntry(getKey(index), value);
            }
          }
          return endOfData();
        }
      };
    }

    // redeclare to help optimizers with b/310253115