// Sanity check, should not happen.
		o.FilterPrefix = ""
	}
}

// filter will apply the options and return the number of objects requested by the limit.
// Will return io.EOF if there are no more entries with the same filter.
// The last entry can be used as a marker to resume the listing.
func (r *metacacheReader) filter(o listPathOptions) (entries metaCacheEntriesSorted, err error) {
	// Forward to prefix, if any

      },
      "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"],

    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");

        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)));

    }

    /**
     * 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.

        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

        assertFalse(filter(createUnfiltered(contents), EVEN).contains(new Object()));
      }
    }

    public void testAddAllFailsAtomically() {
      ImmutableList<Integer> toAdd = ImmutableList.of(2, 4, 3);
      for (List<Integer> contents : SAMPLE_INPUTS) {
        C filtered = filter(createUnfiltered(contents), EVEN);
        C filteredToModify = filter(createUnfiltered(contents), EVEN);

        this.dataIndex = dataIndex;
    }

    /**
     * Returns the filter index name.
     * @return The filter index name.
     */
    public String getFilterIndex() {
        return filterIndex;
    }

    /**
     * Sets the filter index name.
     * @param filterIndex The filter index name.
     */
    public void setFilterIndex(final String filterIndex) {