if (dominant == null || recessive == null) {
            return;
        }

        recessive.setSourceLevel(recessiveSourceLevel);

        List<String> dominantActiveProfiles = dominant.getActiveProfiles();
        List<String> recessiveActiveProfiles = recessive.getActiveProfiles();

        if (recessiveActiveProfiles != null) {
            if (dominantActiveProfiles == null) {

                    it.set(MavenPropertiesLoader.substVars(it.next(), null, null, callback));
                }
            }
            commandLineBuilder.addOption(option);
        }
        for (String arg : cliRequest.commandLine.getArgList()) {
            commandLineBuilder.addArg(MavenPropertiesLoader.substVars(arg, null, null, callback));
        }
        cliRequest.commandLine = commandLineBuilder.build();

     * @param level The parameter value of level. (NotNull)
     */
    public void setLevel(String level) {
        registerVariable("level", level);
    }

    /**
     * Set the value of hostname, used in parameter comment. <br>
     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.

        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .repository(requireNonNull(repository, "repository cannot be null"))
                .artifacts(requireNonNull(artifacts, "artifacts cannot be null"))
                .build();
    }

    class ArtifactDeployerRequestBuilder {
        Session session;
        RequestTrace trace;

     * value is undefined.
     *
     * @return The location of the problem, never {@code null}.
     */
    String getLocation();

    /**
     * Gets the exception that caused this problem (if any).
     *
     * @return The exception that caused this problem or {@code null} if not applicable.
     */
    Exception getException();

    /**
     * Gets the message that describes this problem.

        for (Vertex v : children) {
            DfsState state = stateMap.putIfAbsent(v, DfsState.VISITING);
            if (state == null) {
                cycle.addLast(v.label);
                List<String> ret = visitCycle(v.children, stateMap, cycle);
                if (ret != null) {
                    return ret;
                }
                cycle.removeLast();
                stateMap.put(v, DfsState.VISITED);

            if (result != null) {
                assertEquals(128, result.length());
            }
        } catch (Exception e) {
            // Expected for empty map without URL
        }

        // Test with null URL
        Map<String, Object> nullUrlMap = new HashMap<>();
        nullUrlMap.put("url", null);
        try {

        .testEquals();
  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_emptyURLClassLoader_noParent() {
    assertThat(ClassPath.getClassPathEntries(new URLClassLoader(new URL[0], null)).keySet())
        .isEmpty();
  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_urlClassLoader_noParent() throws Exception {

        @Test
        @DisplayName("Should handle null values in toString")
        void testToStringWithNulls() {
            String result = referralData.toString();

            assertTrue(result.contains("server=null"));
            assertTrue(result.contains("share=null"));
            assertTrue(result.contains("link=null"));
            assertTrue(result.contains("path=null"));
        }
    }

    @Nested

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }