assertArrayEquals(Arrays.copyOfRange(longFileId, 0, 16), Arrays.copyOfRange(buffer, 16, 32));
        }

        @Test
        @DisplayName("Should handle file ID shorter than 16 bytes")
        void testShortFileId() {
            byte[] shortFileId = new byte[8];
            Arrays.fill(shortFileId, (byte) 0xAB);
            request.setFileId(shortFileId);

certifi==2025.1.31 \
    --hash=sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651 \
    --hash=sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe
    # via requests
charset-normalizer==3.4.1 \
    --hash=sha256:0167ddc8ab6508fe81860a57dd472b2ef4060e8d378f0cc555707126830f2537 \
    --hash=sha256:01732659ba9b5b873fc117534143e4feefecf3b2078b0a6a2e925271bb6f4cfa \

certifi==2025.1.31 \
    --hash=sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651 \
    --hash=sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe
    # via requests
charset-normalizer==3.4.1 \
    --hash=sha256:0167ddc8ab6508fe81860a57dd472b2ef4060e8d378f0cc555707126830f2537 \
    --hash=sha256:01732659ba9b5b873fc117534143e4feefecf3b2078b0a6a2e925271bb6f4cfa \

certifi==2025.1.31 \
    --hash=sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651 \
    --hash=sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe
    # via requests
charset-normalizer==3.4.1 \
    --hash=sha256:0167ddc8ab6508fe81860a57dd472b2ef4060e8d378f0cc555707126830f2537 \
    --hash=sha256:01732659ba9b5b873fc117534143e4feefecf3b2078b0a6a2e925271bb6f4cfa \

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Method;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.nio.file.StandardOpenOption;
import java.security.NoSuchAlgorithmException;

import static com.google.common.base.StandardSystemProperty.OS_NAME;
import static com.google.common.base.StandardSystemProperty.PATH_SEPARATOR;
import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.US_ASCII;

import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Closer;

    }

    private String maskUsername(String username) {
        if (!maskSensitiveData || username == null) {
            return username;
        }

        // Show first and last character only
        if (username.length() <= 2) {
            return "***";
        }

        return username.charAt(0) + "***" + username.charAt(username.length() - 1);
    }

import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * LocalCache emulation for GWT.
 *
 * @param <K> the base key type
 * @param <V> the base value type
 * @author Charles Fry
 * @author Jon Donovan
 */
@NullUnmarked
@SuppressWarnings("nullness") // TODO: b/384945891 - Remove after fixing checker.
public class LocalCache<K, V> implements ConcurrentMap<K, V> {

import static com.google.common.hash.BloomFilter.toBloomFilter;
import static com.google.common.hash.Funnels.unencodedCharsFunnel;
import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.base.Stopwatch;
import com.google.common.collect.ImmutableSet;

            assertThrows(NullPointerException.class, () -> req.size());
        }

        @Test
        @DisplayName("Should handle file ID shorter than 16 bytes")
        void testShortFileId() {
            byte[] shortFileId = new byte[8];
            Arrays.fill(shortFileId, (byte) 0xAB);
            request.setFileId(shortFileId);