def authenticate_user(fake_db, username: str, password: str):
    user = get_user(fake_db, username)
    if not user:
        verify_password(password, DUMMY_HASH)
        return False
    if not verify_password(password, user.hashed_password):
        return False
    return user


def create_access_token(data: dict, expires_delta: timedelta | None = None):
    to_encode = data.copy()
    if expires_delta:

		},
		// Test 8 - JWT is not supported s3 type.
		{
			authT: authTypeJWT,
			pass:  false,
		},
		// Test 9 - unknown auth header is not supported s3 type.
		{
			authT: authTypeUnknown,
			pass:  false,
		},
		// Test 10 - some new auth type is not supported s3 type.
		{
			authT: authType(9),
			pass:  false,
		},
	}
	// Validate all the test cases.
	for i, tt := range testCases {

	if err := target.init(); err != nil {
		return false, err
	}
	return target.isActive()
}

func (target *ElasticsearchTarget) isActive() (bool, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	err := target.checkAndInitClient(ctx)
	if err != nil {
		return false, err
	}

	return target.client.ping(ctx, target.args)
}

  /**
   * Returns the default value of {@code type} as defined by JLS --- {@code 0} for numbers, {@code
   * false} for {@code boolean} and {@code '\0'} for {@code char}. For non-primitive types and
   * {@code void}, {@code null} is returned.
   */
  @SuppressWarnings({
    "unchecked",
    "BooleanLiteral" // `(T) false` would produce an error
  })
  public static <T> @Nullable T defaultValue(Class<T> type) {
    checkNotNull(type);

        private static List<FileEntry[]> staticPages;
        private static boolean staticThrowOnOpen;

        private int pageIdx = -1; // Start before first page
        private boolean done = false;
        private boolean throwOnFetch;
        private boolean throwOnCloseInternal;

        // Use static factory method to work around constructor ordering

        assertEquals("Executed:  ", result);
    }

    @Test
    public void test_addShutdownListener() {
        // Test adding shutdown listener
        AtomicBoolean shutdownCalled = new AtomicBoolean(false);
        ShutdownListener listener = new ShutdownListener() {
            @Override
            public void onShutdown() {
                shutdownCalled.set(true);
            }
        };

          return true;
        } catch (ArithmeticException e) {
          return false;
        }
      }

      @Override
      public boolean noAddOverflow(long a, long b) {
        try {
          long unused = LongMath.checkedAdd(a, b);
          return true;
        } catch (ArithmeticException e) {
          return false;
        }
      }

      @Override

          return true;
        } catch (ArithmeticException e) {
          return false;
        }
      }

      @Override
      public boolean noAddOverflow(long a, long b) {
        try {
          long unused = LongMath.checkedAdd(a, b);
          return true;
        } catch (ArithmeticException e) {
          return false;
        }
      }

      @Override

        // 4. Processing the response

        // For now, we'll return false to indicate that the concrete implementation
        // needs to be provided by the calling code
        log.warn("performReconnection called but no concrete implementation available. "
                + "This method should be overridden by the actual SMB implementation.");

        return false;
    }

    /**

    }

    /**
     * Clears all search criteria and resets pagination settings.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
    }

    /**
     * Gets the default page size from configuration.