import static com.google.common.collect.ImmutableMapEntry.createEntryArray;
import static com.google.common.collect.Maps.immutableEntry;
import static com.google.common.collect.RegularImmutableMap.MAX_HASH_BUCKET_LENGTH;
import static com.google.common.collect.RegularImmutableMap.checkNoConflictInKeyBucket;
import static java.util.Objects.requireNonNull;

import com.google.common.annotations.GwtCompatible;

    for (int i = 0; i < 10; i++) {
      builder.put(i, i);
    }
    Object[] builderArrayAfterPuts = builder.alternatingKeysAndValues;
    RegularImmutableMap<Integer, Integer> map =
        (RegularImmutableMap<Integer, Integer>) builder.buildOrThrow();
    Object[] mapInternalArray = map.alternatingKeysAndValues;
    assertSame(builderArray, builderArrayAfterPuts);