for (Entry<String, String> entry : entries) {
        builder.put(entry.getKey(), entry.getValue());
      }
      return ImmutableBiMap.copyOf(builder);
    }
  }

  public static class ImmutableBiMapCopyOfEntriesGenerator extends TestStringBiMapGenerator {
    @Override
    protected BiMap<String, String> create(Entry<String, String>[] entries) {
      return ImmutableBiMap.copyOf(asList(entries));
    }
  }

      for (Entry<String, String> entry : entries) {
        builder.put(entry.getKey(), entry.getValue());
      }
      return ImmutableBiMap.copyOf(builder);
    }
  }

  public static class ImmutableBiMapCopyOfEntriesGenerator extends TestStringBiMapGenerator {
    @Override
    protected BiMap<String, String> create(Entry<String, String>[] entries) {
      return ImmutableBiMap.copyOf(asList(entries));
    }
  }

import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.collect.testing.google.BiMapGenerators.ImmutableBiMapCopyOfEntriesGenerator;
import com.google.common.collect.testing.google.BiMapGenerators.ImmutableBiMapCopyOfGenerator;
import com.google.common.collect.testing.google.BiMapGenerators.ImmutableBiMapGenerator;