if (initialBytes == null) {
        return checkNotNull(bytes);
      } else {
        byte[] result = new byte[initialBytes.length + bytes.length];
        System.arraycopy(initialBytes, 0, result, 0, initialBytes.length);
        System.arraycopy(bytes, 0, result, initialBytes.length, bytes.length);
        return result;
      }
    }

    @Override
    public byte[] getSinkContents() throws IOException {

    }
  }

  private static Integer[] concat(Integer[] left, Integer[] right) {
    Integer[] result = new Integer[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestIntegerListGenerator implements TestListGenerator<Integer> {
    @Override

    }
  }

  private static Byte[] concat(Byte[] left, Byte[] right) {
    Byte[] result = new Byte[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestByteListGenerator implements TestListGenerator<Byte> {
    @Override

    }
  }

  private static Long[] concat(Long[] left, Long[] right) {
    Long[] result = new Long[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestLongListGenerator implements TestListGenerator<Long> {
    @Override

        mac.update(seqBytes); // sequence
        mac.update(data); // data
        final byte[] dgst = mac.digest();
        byte[] trunc = new byte[8];
        System.arraycopy(dgst, 0, trunc, 0, 8);

        if (log.isDebugEnabled()) {
            log.debug("Digest " + Hexdump.toHexString(dgst));
            log.debug("Truncated " + Hexdump.toHexString(trunc));
        }

            this.createContexts = new CreateContextRequest[] { context };
        } else {
            CreateContextRequest[] newContexts = new CreateContextRequest[this.createContexts.length + 1];
            System.arraycopy(this.createContexts, 0, newContexts, 0, this.createContexts.length);
            newContexts[this.createContexts.length] = context;
            this.createContexts = newContexts;
        }
    }

    /**

        dst[dstIndex + 2] = this.fileInformationClass;
        dst[dstIndex + 3] = this.queryFlags;
        dstIndex += 4;
        SMBUtil.writeInt4(this.fileIndex, dst, dstIndex);
        dstIndex += 4;
        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;

        final int fnOffsetOffset = dstIndex;
        final int fnLengthOffset = dstIndex + 2;
        dstIndex += 4;

        dstIndex += 4;
        SMBUtil.writeInt4(this.dataLength, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt8(this.offset, dst, dstIndex);
        dstIndex += 8;
        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;
        SMBUtil.writeInt4(this.channel, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.remainingBytes, dst, dstIndex);

            }

            System.arraycopy(txn_buf, bufParameterOffset, dst, dstIndex, parameterCount);
            dstIndex += parameterCount;
        }

        if (dataCount > 0) {
            p = pad1;
            while (p-- > 0) {
                dst[dstIndex] = (byte) 0x00; // Pad1
                dstIndex++;
            }
            System.arraycopy(txn_buf, bufDataOffset, dst, dstIndex, dataCount);

        }
        bufferIndex += 4;
        this.ctlCode = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        this.fileId = new byte[16];
        System.arraycopy(buffer, bufferIndex, this.fileId, 0, 16);
        bufferIndex += 16;

        final int inputOffset = SMBUtil.readInt4(buffer, bufferIndex) + getHeaderStart();
        bufferIndex += 4;