if p := e.prev; e.list != nil && p != &e.list.root {
		return p
	}
	return nil
}

// LruList represents a doubly linked list.
// The zero Value for LruList is an empty list ready to use.
type LruList[K comparable, V any] struct {
	root Entry[K, V] // sentinel list element, only &root, root.prev, and root.next are used
	len  int         // current list Length excluding (this) sentinel element

	if err != nil {
		return ErrInvalidRetentionDate
	}

	*rDate = RetentionDate{retDate}
	return nil
}

// MarshalXML encodes expiration date if it is non-zero and encodes
// empty string otherwise
func (rDate RetentionDate) MarshalXML(e *xml.Encoder, startElement xml.StartElement) error {
	if rDate.IsZero() {
		return nil
	}
	return e.EncodeElement(amztime.ISO8601Format(rDate.Time), startElement)

			}
		}
		// Hadoop makes the max-keys=2 listing call just to find if the directory is empty or not, or in the case
		// of an object to check for object existence. For versioned buckets, MinIO's non-recursive
		// call will report top level prefixes in deleted state, whereas spark/hadoop interpret this as non-empty
		// and throw a 404 exception. This is especially a problem for spark jobs overwriting the same partition

            }
            break;
        default:
            break;
        }
        return OptionalEntity.empty();
    }

    /**
     * Get a boost document rule from a form.
     * @param form The create form.
     * @return An optional entity of a boost document rule.
     */

        assertEquals(Integer.valueOf(Constants.OK_STATUS), result.getStatus());

        // CreateTime should be set
        assertNotNull(result.getCreateTime());

        // AccessResultData should be created (empty)
        assertNotNull(result.getAccessResultData());
    }

    public void test_initWithResultDataOnly() {
        // Test init method with ResultData only

        assertEquals(expectedBytes.length, fnLength);
    }

    @Test
    @DisplayName("Test with empty filename")
    void testEmptyFileName() {
        request = new Smb2QueryDirectoryRequest(mockConfig);
        request.setFileName("");

        byte[] buffer = new byte[1024];

        }
    }

    @Nested
    @DisplayName("Edge Cases")
    class EdgeCaseTests {

        @Test
        @DisplayName("Should handle empty byte arrays")
        void testWithEmptyArrays() throws Exception {
            // Given
            Configuration config = mock(Configuration.class);
            when(config.getPid()).thenReturn(12345);

        validator.validatePath("\\share\\folder\\file.txt");
        validator.validatePath("C:\\Windows\\System32");
        validator.validatePath(null); // Null should be allowed
        validator.validatePath(""); // Empty should be allowed
    }

    @Test
    public void testPathTooLong() throws Exception {
        String longPath = "\\share" + "\\folder".repeat(5000);
        assertThrows(SmbException.class, () -> {

        "Cannot buffer entire body for content length: 2147483648",
      )
    }
  }

  @Test
  fun byteStringEmpty() {
    val body = body("")
    assertThat(body.byteString()).isEqualTo(ByteString.EMPTY)
  }

  @Test
  fun byteStringSeesBom() {
    val body = body("efbbbf68656c6c6f")
    val actual = body.byteString()
    val expected: ByteString = "efbbbf68656c6c6f".decodeHex()

	if r.Format != "" {
		f := strings.ToLower(r.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return fmt.Errorf("unrecognized format")
		}
	}

	if r.Key == "" {
		return fmt.Errorf("empty key")
	}

	if r.QueueDir != "" {
		if !filepath.IsAbs(r.QueueDir) {
			return errors.New("queueDir path should be absolute")
		}
	}

	return nil
}