byte[] dst1 = new byte[10];
        byte[] dst2 = new byte[10];

        // Act
        int result1 = transWaitNamedPipe.writeSetupWireFormat(dst1, 0);
        int result2 = transWaitNamedPipe.writeSetupWireFormat(dst2, 0);

        // Assert
        assertEquals(result1, result2);
        assertArrayEquals(dst1, dst2);
    }

    @Test

	b.mu.RLock()
	defer b.mu.RUnlock()
	dst := make(map[string]metacache, len(b.caches))
	maps.Copy(dst, b.caches)
	// Copy indexes
	dst2 := make(map[string][]string, len(b.cachesRoot))
	for k, v := range b.cachesRoot {
		tmp := make([]string, len(v))
		copy(tmp, v)
		dst2[k] = tmp
	}

	return dst, dst2
}

// deleteAll will delete all on disk data for ALL caches.

func (r *PReader) nextSplit(skip int, dst []byte) ([]byte, error) {
	if cap(dst) < skip {
		dst = make([]byte, 0, skip+1024)
	}
	dst = dst[:skip]
	if skip > 0 {
		n, err := io.ReadFull(r.buf, dst)
		if err != nil && err != io.ErrUnexpectedEOF {
			// If an EOF happens after reading some but not all the bytes,
			// ReadFull returns ErrUnexpectedEOF.
			return dst[:n], err
		}
		dst = dst[:n]

        byte[] dst = new byte[2];

        // When
        int bytesWritten = trans.writeSetupWireFormat(dst, 0);

        // Then
        assertEquals(2, bytesWritten, "Should write 2 bytes.");
        assertEquals(SmbComTransaction.TRANS2_QUERY_PATH_INFORMATION, dst[0], "The first byte should be the subCommand.");
        assertEquals((byte) 0x00, dst[1], "The second byte should be 0.");
    }

        dstIndex += 4;
        for (int i = 0; i < 4; i++) {
            dst[dstIndex++] = (byte) 0xFF;
        }
        SMBUtil.writeInt2(this.writeMode, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.remaining, dst, dstIndex);
        dstIndex += 2;
        dst[dstIndex] = (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;

    protected int writeSetupWireFormat(final byte[] dst, int dstIndex) {
        dst[dstIndex] = getSubCommand();
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        return 2;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        SMBUtil.writeInt2(this.searchAttributes, dst, dstIndex);
        dstIndex += 2;

        setupCount = 2;
        name = "\\PIPE\\";
    }

    @Override
    int writeSetupWireFormat(final byte[] dst, int dstIndex) {
        dst[dstIndex] = subCommand;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        writeInt2(pipeFid, dst, dstIndex);
        dstIndex += 2;
        return 4;
    }

    @Override

    @Override
    protected int writeParameterWordsWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        SMBUtil.writeInt2(this.tflags, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.desiredAccess, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.searchAttributes, dst, dstIndex);
        dstIndex += 2;

                "parameterOffset should be written correctly");
        assertEquals(smbComNtTransaction.dataCount, SmbComTransaction.readInt4(dst, 27), "dataCount should be written correctly");
        assertEquals(smbComNtTransaction.dataOffset, SmbComTransaction.readInt4(dst, 31), "dataOffset should be written correctly");
        assertEquals(smbComNtTransaction.setupCount, dst[35], "setupCount should be written correctly");

            assertEquals(expected[i], dst[offset + i], () -> "byte index " + idx);
        }
        // The region before offset and after the payload must remain untouched.
        for (int i = 0; i < offset; i++) {
            final int idx = i;
            assertEquals(0, dst[i], () -> "pre-offset byte " + idx + " modified");
        }
        for (int i = offset + 8; i < dst.length; i++) {
            final int idx = i;