* lowercase letters. Padding and separator characters remain in their original case.
   *
   * @throws IllegalStateException if the alphabet used by this encoding contains mixed upper- and
   *     lower-case characters
   */
  public abstract BaseEncoding lowerCase();

  /**
   * Returns an encoding that behaves equivalently to this encoding, but decodes letters without
   * regard to case.
   *

    AtomicInteger lettersCloseCount = new AtomicInteger();
    Stream<String> letters = Stream.of("a", "b", "c").onClose(lettersCloseCount::incrementAndGet);
    AtomicInteger numbersCloseCount = new AtomicInteger();
    Stream<Integer> numbers = Stream.of(1, 2, 3).onClose(numbersCloseCount::incrementAndGet);

    Stream<String> zipped = Streams.zip(letters, numbers, (a, b) -> a + ":" + b);

    zipped.close();

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.collect.testing.testers.MapEntrySetTester;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumMap;

      notJar.delete();
    }
  }

  public void testGetClassPathEntry() throws MalformedURLException, URISyntaxException {
    if (isWindows()) {
      return; // TODO: b/136041958 - We need to account for drive letters in the path.
    }
    assertEquals(
        new File("/usr/test/dep.jar").toURI(),
        ClassPath.getClassPathEntry(new File("/home/build/outer.jar"), "file:/usr/test/dep.jar")
            .toURI());

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.collect.testing.testers.MapEntrySetTester;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumMap;

import com.google.common.collect.testing.google.ListGenerators.ImmutableListTailSubListGenerator;
import com.google.common.collect.testing.google.ListGenerators.UnhashableElementsImmutableListGenerator;
import com.google.common.collect.testing.testers.ListHashCodeTester;
import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

import com.google.common.collect.testing.google.SetGenerators.ImmutableSortedSetUnhashableGenerator;
import com.google.common.collect.testing.testers.SetHashCodeTester;
import com.google.common.testing.CollectorTester;
import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.util.Arrays;

  // implementations.

  private Futures() {}

  /**
   * Creates a {@code ListenableFuture} which has its value set immediately upon construction. The
   * getters just return the value. This {@code Future} can't be canceled or timed out and its
   * {@code isDone()} method always returns {@code true}.
   */
  public static <V extends @Nullable Object> ListenableFuture<V> immediateFuture(

 * limitations under the License.
 */

package com.google.common.collect.testing;

import static com.google.common.collect.testing.testers.CollectionSpliteratorTester.getSpliteratorNotImmutableCollectionAllowsAddMethod;
import static com.google.common.collect.testing.testers.CollectionSpliteratorTester.getSpliteratorNotImmutableCollectionAllowsRemoveMethod;
import static java.util.Arrays.asList;

import com.google.common.collect.testing.google.SetGenerators.ImmutableSortedSetUnhashableGenerator;
import com.google.common.collect.testing.testers.SetHashCodeTester;
import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;