graph.predecessors(node).iterator(),
                          (N predecessor) -> EndpointPair.ordered(predecessor, node)),
                      Iterators.transform(
                          // filter out 'node' from successors (already covered by predecessors,
                          // above)
                          Sets.difference(graph.successors(node), ImmutableSet.of(node)).iterator(),

        "tokenizer" : "fess_japanese_normal",
        "filter" : ["reading_form"]
      },
      "reading_term_analyzer" : {
        "type" : "custom",
        "tokenizer" : "fess_japanese_normal"
      },
      "normalize_analyzer" : {
        "type" : "custom",
        "tokenizer" : "keyword",
        "char_filter" : ["mapping_char"],
        "filter" : ["lowercase"]
      },
      "contents_analyzer" : {

    void accept_returnsTrueForDirectory_andVerifiesInteraction() throws Exception {
        // Arrange: filter that accepts directories only
        SmbFileFilter filter = f -> f.isDirectory();
        when(smbFile.isDirectory()).thenReturn(true);

        // Act
        boolean result = filter.accept(smbFile);

        // Assert
        assertTrue(result, "Directory should be accepted");

    }

    /**
     * Adds a filter to the query processing chain.
     * The filter chain is recreated after adding the filter.
     *
     * @param filter the filter to add
     */
    public void addFilter(final Filter filter) {
        filterList.add(filter);
        createFilterChain();
    }

    /**
     * Creates the filter chain by combining all registered filters.

      },
      "contents_analyzer_pl" : {
        "type" : "custom",
        "tokenizer" : "standard",
        "char_filter" : ["mapping_char"],
        "filter" : ["lowercase", "content_length_filter", "limit_token_count_filter"]
      },
      "contents_reading_analyzer_pl" : {
        "type" : "custom",
        "tokenizer" : "standard",
        "char_filter" : ["mapping_char"],

        ScopeArtifactFilter filter = new ScopeArtifactFilter(Artifact.SCOPE_TEST);

        assertTrue(filter.include(newArtifact(Artifact.SCOPE_COMPILE)));
        assertTrue(filter.include(newArtifact(Artifact.SCOPE_SYSTEM)));
        assertTrue(filter.include(newArtifact(Artifact.SCOPE_PROVIDED)));
        assertTrue(filter.include(newArtifact(Artifact.SCOPE_RUNTIME)));
        assertTrue(filter.include(newArtifact(Artifact.SCOPE_TEST)));

        final EncodingFilter filter = new EncodingFilter();
        Map<String, String[]> paramMap;

        paramMap = filter.parseQueryString("a=", "UTF-8");
        assertEquals(1, paramMap.size());
        assertEquals("", paramMap.get("a")[0]);

        paramMap = filter.parseQueryString("a", "UTF-8");
        assertEquals(1, paramMap.size());
        assertEquals("", paramMap.get("a")[0]);

        // Verify iteration
        assertTrue(iterator.hasNext());
        assertSame(resource, iterator.next());
        assertFalse(iterator.hasNext());

        // With filter, resource should be closed due to try-with-resources
        verify(filter).accept(resource);
        verify(resource).close();
    }

    @Test
    @DisplayName("Iterator with rejecting filter - finds next acceptable")

                entry("keep2", SmbConstants.TYPE_SHARE));

        // Filter accepts names starting with "keep"
        when(filter.accept(any())).thenAnswer(inv -> {
            SmbResource res = inv.getArgument(0);
            return res.getName().startsWith("keep");
        });

        ShareEnumIterator it = new ShareEnumIterator(parent, entries.iterator(), filter);

        // Returns only accepted resources

But in most of the cases where we need to do something like this, we want the model just to **filter/remove** some of the data as in this example.

And in those cases, we can use classes and inheritance to take advantage of function **type annotations** to get better support in the editor and tools, and still get the FastAPI **data filtering**.