public final class MapMaker {
  private static final int DEFAULT_INITIAL_CAPACITY = 16;
  private static final int DEFAULT_CONCURRENCY_LEVEL = 4;

  static final int UNSET_INT = -1;

  // TODO(kevinb): dispense with this after benchmarking
  boolean useCustomMap;

  int initialCapacity = UNSET_INT;
  int concurrencyLevel = UNSET_INT;

  @CheckForNull Strength keyStrength;
  @CheckForNull Strength valueStrength;