void testErrorConditions() {
        // Test operations on empty service
        assertEquals(0, mockService.getRegistrationCount());
        assertFalse(mockService.hasRegistration("non-existent"));
        assertFalse(mockService.unregisterWitness("non-existent"));
        assertFalse(mockService.processHeartbeat("non-existent", 1));

        // Test registration with null/empty values

		return err
	}

	if !r.Source.Creds.Empty() {
		if err := r.Source.Creds.Validate(); err != nil {
			return err
		}
	}
	if r.Target.Endpoint == "" && !r.Target.Creds.Empty() {
		return errInvalidArgument
	}

	if r.Source.Endpoint == "" && !r.Source.Creds.Empty() {
		return errInvalidArgument
	}

func NewEndpoint(arg string) (ep Endpoint, e error) {
	// isEmptyPath - check whether given path is not empty.
	isEmptyPath := func(path string) bool {
		return path == "" || path == SlashSeparator || path == `\`
	}

	if isEmptyPath(arg) {
		return ep, fmt.Errorf("empty or root endpoint is not supported")
	}

	var isLocal bool
	var host string
	u, err := url.Parse(arg)

        //    return null; // handled later
        //}
    }

    @Override
    public OptionalThing<String> determineAlias(final Locale locale) {
        return OptionalObject.empty();
    }

                            + " is set and its value is not \"false\". Disable this detection by removing that variable or by setting it to \"false\"";
                }
            });
        }
        return Optional.empty();
    }

                } catch (final IOException e) {
                    throw new IORuntimeException(e);
                }
                return true;
            }, OptionalThing.empty());
            response.flushBuffer();
            if (logger.isDebugEnabled()) {
                logger.debug("Loaded {} documents", count);
            }

    return Integer.compare(a, b);
  }

  /**
   * Returns {@code true} if {@code target} is present as an element anywhere in {@code array}.
   *
   * @param array an array of {@code int} values, possibly empty
   * @param target a primitive {@code int} value
   * @return {@code true} if {@code array[i] == target} for some value of {@code i}
   */
  public static boolean contains(int[] array, int target) {

              }
            });
      }
    };
  }

  /**
   * Returns a fluent iterable containing no elements.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#empty}.
   *
   * @since 20.0
   */
  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  public static <E extends @Nullable Object> FluentIterable<E> of() {

        public String getInitParameter(final String name) {
            if (SpnegoHttpFilter.Constants.LOGGER_LEVEL.equals(name)) {
                final String logLevel = getProperty(SPNEGO_LOGGER_LEVEL, StringUtil.EMPTY);
                if (StringUtil.isNotBlank(logLevel)) {
                    return logLevel;
                }
                if (logger.isDebugEnabled()) {
                    return "3";
                }

     *         restrictions. Otherwise, the restrictions on the returned range will be empty.
     *         </p>
     *         <p>
     *         The recommended version of the returned version range will be the recommended version of
     *         this version range, provided that ranges falls within the intersected restrictions. If
     *         the restrictions are empty, this version range's recommended version is used if it is not