assertNull(it.next(), "next() returns null when exhausted in this implementation");
    }

    @Test
    @DisplayName("With filter: only accepted entries are returned and filter is invoked per entry")
    void withFilter_acceptsSome_skipsOthers_andVerifiesInteractions() throws Exception {
        SmbFile parent = newParent();

        SMBUtil.writeInt8(500000, buffer, 28); // Available allocation units
        SMBUtil.writeInt4(512, buffer, 36); // Sectors per unit
        SMBUtil.writeInt4(4096, buffer, 40); // Bytes per sector

        int result = response.readBytesWireFormat(buffer, bufferIndex);

        assertNotNull(response.getInfo());

 * **ExchangeFinder** chooses which connection carries each exchange. Where possible it will use the same connection for all exchanges in a single call. It prefers reusing pooled connections over establishing new connections.      

#### Per-Connection Locks

    // Default configuration
    private static final int DEFAULT_HASH_ALGORITHM = HASH_ALGO_SHA512;
    private static final int SALT_SIZE = 32; // 32 bytes as per SMB 3.1.1 spec
    private static final int HASH_SIZE_SHA512 = 64; // SHA-512 produces 64-byte hashes

    // Session-specific preauth integrity contexts

        // Arrange: first ensureTreeConnected comes from pipe
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree); // method returns itself per implementation

        // Act: call twice
        try (SmbTreeHandleImpl t1 = target.ensureTreeConnected(); SmbTreeHandleImpl t2 = target.ensureTreeConnected()) {
            assertSame(tree, t1);

    }

    @Test
    public void testReadParameterWordsUpdatesCount() {
        // create a buffer with count = 0x1234 (4660 decimal)
        // Using little-endian byte order as per SMBUtil.readInt2
        byte[] buf = new byte[12];
        buf[0] = 0x34; // Low byte
        buf[1] = 0x12; // High byte
        int written = resp.readParameterWordsWireFormat(buf, 0);

"myanmar","namibia","nauru","nepal","netherlands","new caledonia","new zealand","nicaragua","niger","nigeria","niue","norfolk island","northern mariana islands","norway","oman","pakistan","palau","palestine","panama","papua new guinea","paraguay","peru","philippines","pitcairn","poland","portugal","puerto rico","qatar","réunion","romania","russia","rwanda","saint barthélemy","saint helena","ascension and tristan da cunha","Ascension and tristan da cunha","saint kitts and nevis","saint lucia","saint...

 *
 * <ul>
 *   <li>{@link ImmutableDoubleArray}
 *   <li>{@link ImmutableIntArray}
 *   <li>{@link ImmutableLongArray}
 *   <li>{@link UnsignedInteger}
 *   <li>{@link UnsignedLong}
 * </ul>
 *
 * <h3>Per-type static utilities</h3>
 *
 * <ul>
 *   <li>{@link Booleans}
 *   <li>{@link Bytes}
 *       <ul>
 *         <li>{@link SignedBytes}
 *         <li>{@link UnsignedBytes}
 *       </ul>
 *   <li>{@link Chars}

    /**
     * Channel binding is required
     */
    public static final int CHANNEL_BINDING_REQUIRED = 2;

    /**
     * Default maximum number of channels per session
     */
    public static final int DEFAULT_MAX_CHANNELS = 4;

    /**
     * Absolute maximum number of channels supported
     */
    public static final int ABSOLUTE_MAX_CHANNELS = 32;

    /**

      new RegularImmutableMap<>(null, new Object[0], 0);

  /*
   * This is an implementation of ImmutableMap optimized especially for Android, which does not like
   * objects per entry.  Instead we use an open-addressed hash table.  This design is basically
   * equivalent to RegularImmutableSet, save that instead of having a hash table containing the