System.arraycopy(mac, 0, ret, 0, mac.length);
        System.arraycopy(clientData, 0, ret, mac.length, clientData.length);
        return ret;
    }

    /**
     * Generates the NTOWFv2 hash for the given domain, username, and password.
     *
     * @param domain the authentication domain
     * @param username the username
     * @param password the password
     *

        final int length = src != null ? src.length : 0;
        if (length == 0) {
            return;
        }
        writeUShort(dest, offset, length);
        writeUShort(dest, offset + 2, length);
        writeULong(dest, offset + 4, bodyOffset);
        System.arraycopy(src, 0, dest, bodyOffset, length);
    }

    static String getOEMEncoding() {

            } else {
                // backward compatibility
                final int length = spaceStr.length();
                spaceChars = new int[length];
                for (int i = 0; i < length; i++) {
                    spaceChars[i] = spaceStr.codePointAt(i);
                }
            }
            propMap.put(key, spaceChars);
        }

        fp = pos;
    }

    /**
     * Returns the length of the file.
     *
     * @return the file length in bytes
     * @throws SmbException if an I/O error occurs
     */
    public long length() throws SmbException {
        return file.length();
    }

    /**
     * Sets the length of the file. The file will be truncated or extended as necessary.
     *

        int cpos = pos;
        while (i < prefix.length() && cpos < input.length()) {
            if (prefix.charAt(i) != input.charAt(cpos)) {
                return false;
            }
            i++;
            cpos++;
        }
        return true;
    }

    public boolean lookingAt(Pattern pattern) {
        Matcher m = pattern.matcher(input);
        m.region(pos, input.length());
        return m.lookingAt();
    }

   */
  internal const val B1_FLAG_MASK = 128

  /**
   * Byte 1 mask for the payload length.
   *
   * If this value is [PAYLOAD_SHORT], the next two
   * bytes represent the length. If this value is [PAYLOAD_LONG], the next eight bytes
   * represent the length.
   */
  internal const val B1_MASK_LENGTH = 127

  internal const val OPCODE_CONTINUATION = 0x0

  public final Entry<String, String>[] createArray(int length) {
    return (Entry<String, String>[]) new Entry<?, ?>[length];
  }

  @Override
  public final String[] createKeyArray(int length) {
    return new String[length];
  }

  @Override
  public final String[] createValueArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override

  public final Entry<String, String>[] createArray(int length) {
    return (Entry<String, String>[]) new Entry<?, ?>[length];
  }

  @Override
  public final String[] createKeyArray(int length) {
    return new String[length];
  }

  @Override
  public final String[] createValueArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override

            // Simulate encoding a string
            offset += (s.length() * 2) + 4; // Length + null terminator + actual string
        }
    }

    // Test for LsarQosInfo
    @Test
    void testLsarQosInfoEncode() throws NdrException {
        lsarpc.LsarQosInfo qosInfo = new lsarpc.LsarQosInfo();
        qosInfo.length = 10;
        qosInfo.impersonation_level = 1;
        qosInfo.context_mode = 2;

                Arguments.of(makeSeq(10), 2, 5, 3), // middle slice, non-zero dst index
                Arguments.of(makeSeq(4), 4, 0, 0), // zero-length slice at end
                Arguments.of(makeSeq(16), 7, 3, 0), // small slice from middle
                Arguments.of(makeSeq(16), 0, 0, 5) // zero-length with non-zero dst index
        );
    }

    // Creates a deterministic byte sequence [0,1,2,...,n-1]