*/
    @Nullable
    public static FileTree getJavaMainSourceResources(Project project, Action<? super PatternFilterable> filter) {
        final Optional<FileTree> mainFileTree = getJavaMainSourceSet(project).map(SourceSet::getResources).map(FileTree::getAsFileTree);
        return mainFileTree.map(files -> files.matching(filter)).orElse(null);
    }

    /**

    ImmutableList.Builder<String> builder = ImmutableList.builder();
    assertThrows(NullPointerException.class, () -> builder.add((String) null));

    assertThrows(NullPointerException.class, () -> builder.add((String[]) null));

    assertThrows(NullPointerException.class, () -> builder.add("a", null, "b"));
  }

  public void testBuilderAddAllHandlesNullsCorrectly() {
    {

    // - Class/Member Variables -/
    // --------------------------/

    /**
     * Field NAMESPACE.
     */
    private static final String NAMESPACE = null;

    /**
     * Field fileComment.
     */
    private String fileComment = null;

    // -----------/
    // - Methods -/
    // -----------/

    /**
     * Method setFileComment.
     *
     * @param fileComment a fileComment object.

    @Override
    public File getFile() {
        return path != null ? path.toFile() : null;
    }

    @Override
    public Path getPath() {
        return path;
    }

    @Override
    public void merge(File existing, File result) throws RepositoryException {
        merge(existing != null ? existing.toPath() : null, result != null ? result.toPath() : null);
    }

    @Override

    public ArtifactMetadataRetrievalException(String message) {
        this(message, null, null);
    }

    /**
     * @param cause a cause
     * @deprecated use {@link #ArtifactMetadataRetrievalException(String, Throwable, Artifact)}
     */
    @Deprecated
    public ArtifactMetadataRetrievalException(Throwable cause) {
        this(null, cause, null);
    }

    /**
     * @param message a message

    static {
      if (GENERATE_CANCELLATION_CAUSES) {
        CAUSELESS_CANCELLED = null;
        CAUSELESS_INTERRUPTED = null;
      } else {
        CAUSELESS_CANCELLED = new Cancellation(false, null);
        CAUSELESS_INTERRUPTED = new Cancellation(true, null);
      }
    }

    final boolean wasInterrupted;
    final @Nullable Throwable cause;

  private <T extends Iterator<E>> void internalExecuteAndCompare(
      T reference, T target, IteratorOperation method) {
    Object referenceReturnValue = null;
    PermittedMetaException referenceException = null;
    Object targetReturnValue = null;
    Exception targetException = null;

    try {
      targetReturnValue = method.execute(target);
    } catch (Exception e) { // sneaky checked exception
      targetException = e;

        if (endTime != null) {
            addFieldToSource(sourceMap, "endTime", endTime);
        }
        if (jobName != null) {
            addFieldToSource(sourceMap, "jobName", jobName);
        }
        if (jobStatus != null) {
            addFieldToSource(sourceMap, "jobStatus", jobStatus);
        }
        if (lastUpdated != null) {

    }

    @Test
    void testGetNextNull() {
        // Test case for getNext method when it returns null (no chained request)
        when(mockRequest.getNext()).thenReturn(null);

        assertNull(mockRequest.getNext(), "Next request should be null when mocked to do so.");
        verify(mockRequest, times(1)).getNext();
    }

    @Test
    void testGetResponse() {

                    e.getLocation().getColumnNumber(),
                    e);
        }
    }

    private boolean isStrict(Map<String, ?> options) {
        Object value = (options != null) ? options.get(IS_STRICT) : null;
        return value == null || Boolean.parseBoolean(value.toString());
    }