func extractMetadataFromReq(ctx context.Context, r *http.Request) (metadata map[string]string, err error) {
	return extractMetadata(ctx, textproto.MIMEHeader(r.Form), textproto.MIMEHeader(r.Header))
}

func extractMetadata(ctx context.Context, mimesHeader ...textproto.MIMEHeader) (metadata map[string]string, err error) {
	metadata = make(map[string]string)

	for _, hdr := range mimesHeader {
		// Extract all query values.

    public BoostDocumentRuleCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsBoostDocumentRuleCB cb = this;
        cb.query().docMeta().setId_Equal(id);
        return (BoostDocumentRuleCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    public FileAuthenticationCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsFileAuthenticationCB cb = this;
        cb.query().docMeta().setId_Equal(id);
        return (FileAuthenticationCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    public KeyMatchCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsKeyMatchCB cb = this;
        cb.query().docMeta().setId_Equal(id);
        return (KeyMatchCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    public LabelTypeCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsLabelTypeCB cb = this;
        cb.query().docMeta().setId_Equal(id);
        return (LabelTypeCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    public RequestHeaderCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsRequestHeaderCB cb = this;
        cb.query().docMeta().setId_Equal(id);
        return (RequestHeaderCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    /**
     * Validate message-only constructor with both null and empty messages.
     */
    @ParameterizedTest
    @MethodSource("messageProvider")
    @DisplayName("String ctor: preserves message; default unsuccessful status")
    void messageConstructor_handlesNullAndEmpty(String msg) {
        // Act
        SmbAuthException ex = new SmbAuthException(msg);

        // Assert
        assertEquals(msg, ex.getMessage());

		*gorm.Statement
		Depends []*schema.Schema
	}

	var (
		modelNames, orderedModelNames []string
		orderedModelNamesMap          = map[string]bool{}
		parsedSchemas                 = map[*schema.Schema]bool{}
		valuesMap                     = map[string]Dependency{}
		insertIntoOrderedList         func(name string)
		parseDependence               func(value interface{}, addToList bool)
	)

                return 10;
            }

            @Override
            public String getQueryFacetFieldsMinDocCount() {
                return "5";
            }

            @Override
            public String getQueryFacetFieldsSort() {
                return "count.desc";
            }

            @Override
            public String getQueryFacetFieldsMissing() {
                return "unknown";
            }

/**
 * Create string sets for testing collections that are sorted by natural ordering.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public abstract class TestStringSortedSetGenerator extends TestStringSetGenerator
    implements TestSortedSetGenerator<String> {

  @Override
  public SortedSet<String> create(Object... elements) {
    return (SortedSet<String>) super.create(elements);
  }