}));
    expectReplacement(entry(getKeyForNullValue(), v3()));
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_KEYS})
  public void testMergeAbsentNullKey() {
    assertEquals(
        "Map.merge(null, value, function) should return value",
        v3(),
        getMap()
            .merge(
                null,
                v3(),

            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines
                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);

        if (accessResult != null) {
            final AccessResultData<?> accessResultData = accessResult.getAccessResultData();
            if (accessResultData != null && accessResultData.getEncoding() != null) {
                enc = accessResultData.getEncoding();
                parentEncodingMap.put(key, enc);
                return enc;
            }
        }
        return null;
    }

    /**

         * available. That API is accessed via reflection to make this independent
         * of the runtime JRE
         */
        if (EXT_GSS_CONTEXT_CLASS == null || INQUIRE_SEC_CONTEXT == null || INQUIRE_TYPE_SESSION_KEY == null) {
            throw new SmbException("ExtendedGSSContext support not available from JRE");
        }
        if (EXT_GSS_CONTEXT_CLASS.isAssignableFrom(this.gssContext.getClass())) {

        }).toArray(n -> new String[n]));
        final ProcessBuilder pb = new ProcessBuilder(cmds);
        if (workingDirectory != null) {
            pb.directory(workingDirectory);
        }
        pb.redirectErrorStream(true);

        Process currentProcess = null;
        MonitorThread mt = null;
        try {
            currentProcess = pb.start();

            // monitoring

  private var constructed = false

  private var peekedHeader: DerHeader? = null

  private val bytesLeft: Long
    get() = if (limit == -1L) -1L else (limit - byteCount)

  fun hasNext(): Boolean = peekHeader() != null

  /**
   * Returns the next header to process unless this scope is exhausted.
   *
   * This returns null if:
   *
   *  * The stream is exhausted.

        if (username != null) {
            AccountAttempts account = accountAttempts.get(username);
            if (account != null) {
                account.reset();
            }
        }

        if (sourceIp != null) {
            IpAttempts ip = ipAttempts.get(sourceIp);
            if (ip != null) {
                ip.recordSuccess();
            }
        }

      getMap().putIfAbsent(k0(), null);
    } catch (NullPointerException tolerated) {
    }
    expectUnchanged();
    expectNullValueMissingWhenNullValuesUnsupported(
        "Should not contain null after unsupported putIfAbsent(present, null)");
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
  public void testPut_nullValueSupported() {
    Entry<K, V> nullValueEntry = entry(k3(), null);
    assertNull(

    }

    // Edge inputs: null context returns null session per mock setup
    @Test
    @DisplayName("getSmbSession(ctx) with null context returns null as stubbed")
    void getSmbSession_byContext_null() {
        when(transport.getSmbSession(isNull(jcifs.CIFSContext.class))).thenReturn(null);
        assertNull(transport.getSmbSession((jcifs.CIFSContext) null));

  /**
   * The reason why this stream was closed, or null if it closed normally or has not yet been
   * closed.
   *
   * If there are multiple reasons to abnormally close this stream (such as both peers closing it
   * near-simultaneously) then this is the first reason known to this peer.
   */
  internal var errorCode: ErrorCode? = null
    get() = withLock { field }