docs: @Override
      public ChronicleMapBuilder<K, V> actualChunkSize(int actualChunkSize) {
          if (constantlySizedEntries()) {
              throw new IllegalStateException("Sizes of key type: " + keyBuilder.tClass + " and " +
                      "value type: " + valueBuilder.tClass + " are both constant, " +
                      "so chunk size shouldn't be specified manually");
          }
          if (actualChunkSize <= 0)
              throw new IllegalArgumentException("Chunk size must be positive");
          this.actualChunkSize = actualChunkSize;
          return this;
      }