HSPLandroidx/arch/core/internal/FastSafeIterableMap;->get(Ljava/lang/Object;)Landroidx/arch/core/internal/SafeIterableMap$Entry;
HSPLandroidx/arch/core/internal/FastSafeIterableMap;->putIfAbsent(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
HSPLandroidx/arch/core/internal/SafeIterableMap$Entry;-><init>(Ljava/lang/Object;Ljava/lang/Object;)V

            ValueReference<K, V> valueReference = e.getValueReference();
            V entryValue = valueReference.get();
            // replace the old LoadingValueReference if it's live, otherwise
            // perform a putIfAbsent
            if (oldValueReference == valueReference
                || (entryValue == null && valueReference != UNSET)) {
              ++modCount;
              if (oldValueReference.isActive()) {

    @Override
    public void replaceAll(BiFunction<? super K, ? super V, ? extends V> function) {
      throw new UnsupportedOperationException();
    }

    @Override
    public @Nullable V putIfAbsent(K key, V value) {
      throw new UnsupportedOperationException();
    }

    @Override
    public boolean remove(@Nullable Object key, @Nullable Object value) {