return a;
        }
        @SuppressWarnings("unchecked")
        final T[] array = (T[]) Array.newInstance(a.getClass().getComponentType(), a.length + b.length);
        System.arraycopy(a, 0, array, 0, a.length);
        System.arraycopy(b, 0, array, a.length, b.length);
        return array;
    }

    /**
     * Returns an array that is the concatenation of two arrays.
     * <p>

        // Set number of entries
        setNumEntries(response, 1);

        // Write share name (13 bytes, null padded)
        byte[] nameBytes = shareName.getBytes(StandardCharsets.US_ASCII);
        System.arraycopy(nameBytes, 0, buffer, bufferIndex, Math.min(nameBytes.length, 13));
        bufferIndex += 14;

        // Write type (2 bytes)
        SMBUtil.writeInt2(shareType, buffer, bufferIndex);
        bufferIndex += 2;

            offset += 2;
            System.arraycopy(domain, 0, targetInfo, offset, domainLength);
            offset += domainLength;
        }
        if (serverLength > 0) {
            writeUShort(targetInfo, offset, 1);
            offset += 2;
            writeUShort(targetInfo, offset, serverLength);
            offset += 2;
            System.arraycopy(server, 0, targetInfo, offset, serverLength);
        }

    void testReadDataWireFormatWithValidLength() throws SMBProtocolDecodingException {
        // Prepare test data
        byte[] sourceData = { 10, 20, 30, 40, 50 };
        byte[] buffer = new byte[100];
        System.arraycopy(sourceData, 0, buffer, 10, sourceData.length);

        // Execute
        int result = response.readDataWireFormat(buffer, 10, sourceData.length);

        // Verify
        assertEquals(sourceData.length, result);

    int strCopyLen = len;
    int pos = 0;
    while (count != 0) {
      if ((count & 1) != 0) {
        System.arraycopy(strCopy, 0, array, pos, strCopyLen);
        pos += strCopyLen;
      }
      count >>= 1;
      if (count != 0) {
        System.arraycopy(strCopy, 0, strCopy, strCopyLen, strCopyLen);
        strCopyLen <<= 1;
      }
    }
    return new String(array);
  }

  @Benchmark

import static com.google.common.collect.ImmutableList.asImmutableList;
import static com.google.common.collect.ObjectArrays.checkElementsNotNull;
import static java.lang.System.arraycopy;
import static java.util.Arrays.sort;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;

        int pos = 0;
        System.arraycopy(avFlagsData, 0, fullData, pos, avFlagsData.length);
        pos += avFlagsData.length;
        System.arraycopy(avTimestampData, 0, fullData, pos, avTimestampData.length);
        pos += avTimestampData.length;
        System.arraycopy(avTargetNameData, 0, fullData, pos, avTargetNameData.length);
        pos += avTargetNameData.length;
        System.arraycopy(eolData, 0, fullData, pos, eolData.length);

        assertEquals(fileName.getBytes(StandardCharsets.UTF_16LE).length, nameLength);

        // Verify file name
        byte[] nameBytes = new byte[nameLength];
        System.arraycopy(buffer, 20, nameBytes, 0, nameLength);
        String decodedName = new String(nameBytes, StandardCharsets.UTF_16LE);
        assertEquals(fileName, decodedName);

        // Verify bytes written

        System.arraycopy("SHARE1".getBytes(StandardCharsets.US_ASCII), 0, data, 0, 6);
        data[14] = 0x00;
        data[15] = 0x00; // type = 0
        data[16] = 40;
        data[17] = 0;
        data[18] = 0;
        data[19] = 0; // remark offset

        // Entry 2: IPC$, type 3 (IPC), remark "Inter-Process Communication"

        // The error should occur when System.arraycopy is called.
        ByteEncodable encodable = new ByteEncodable(data, 1, 2); // off=1, len=2, data.length=2. 1+2 > 2

        byte[] dest = new byte[5];

        // Expect IndexOutOfBoundsException from System.arraycopy
        assertThrows(IndexOutOfBoundsException.class, () -> {
            encodable.encode(dest, 0);