return new LinkedHashMap<>(capacity(expectedSize));
  }

  /**
   * Creates a new empty {@link ConcurrentHashMap} instance.
   *
   * @since 3.0
   */
  public static <K, V> ConcurrentMap<K, V> newConcurrentMap() {
    return new ConcurrentHashMap<>();
  }

  /**
   * Creates a <i>mutable</i>, empty {@code TreeMap} instance using the natural ordering of its
   * elements.
   *

				return nil, time.Time{}, err
			}
			policy, _ = c.iamGroupPolicyMap.Load(name)
			return policy.toSlice(), policy.UpdatedAt, nil
		}
		return nil, time.Time{}, nil
	}

	// returned policy could be empty, we use set to de-duplicate.
	var policies set.StringSet
	var updatedAt time.Time

	if store.getUsersSysType() == LDAPUsersSysType {
		// For LDAP policy mapping is part of STS users, we only need to lookup

    /**
     * Return the sAMAccountName of this SID unless it could not
     * be resolved in which case the numeric RID is returned. If this
     * SID is a domain SID, this method will return an empty String.
     *
     * @return the account name
     */
    String getAccountName();

    /**
     * Return the domain name of this SID unless it could not be

        healthyChannel.setState(ChannelState.ESTABLISHED);

        // Use reflection or package-private method to add channel for testing
        // For now, just test the empty case
        assertEquals(0, channelManager.getHealthyChannels().size());
    }

    @Test
    void testChannelSelection() {
        try {
            channelManager.selectChannel(mockMessage);

        final String filename = params.get(ExtractData.RESOURCE_NAME_KEY);
        if (StringUtil.isEmpty(filename) && is == null) {
            throw new MimeTypeException("Cannot detect MIME type: both filename and input stream are empty. At least one is required.");
        }

        final Metadata metadata = new Metadata();
        metadata.add(ExtractData.RESOURCE_NAME_KEY, normalizeFilename(filename));

        try {

        }
        if (body.documents.isEmpty()) {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, "documents is empty."));
        }
        final String indexFieldId = fessConfig.getIndexFieldId();
        final String indexFieldDocId = fessConfig.getIndexFieldDocId();

        final String themeName = artifact.getName().substring(ArtifactType.THEME.getId().length() + 1);
        if (StringUtil.isBlank(themeName)) {
            throw new ThemeException("Theme name is empty: " + artifact);
        }
        return themeName;
    }

    /**
     * Recursively deletes a directory and all its contents.
     * Does not throw exceptions, only logs warnings if deletion fails.
     *

    assertThat(deflated.size).isLessThan(goldenValue.size)
    val inflated = inflater.inflate(deflated)

    assertThat(inflated).isEqualTo(goldenValue)
  }

  @Test fun `inflate deflate empty message`() {
    val deflater = MessageDeflater(false)
    val inflater = MessageInflater(false)

    val goldenValue = "".encodeUtf8()

    val deflated = deflater.deflate(goldenValue)

        assertFalse(Features.deployBuildPom(properties));
    }

    @Test
    void testDeployBuildPomWithEmptyString() {
        // Test that empty string defaults to false
        Map<String, Object> properties = Map.of(Constants.MAVEN_DEPLOY_BUILD_POM, "");
        assertFalse(Features.deployBuildPom(properties));
    }

    @Test

		opts := ObjectOptions{
			UserDefined: map[string]string{
				xhttp.IfNoneMatch: "*",
			},
			CheckPrecondFn: func(oi ObjectInfo) bool {
				// Precondition fails if object exists (ETag is not empty)
				return oi.ETag != ""
			},
		}

		_, err := obj.PutObject(ctx, bucket, object,
			mustGetPutObjReader(t, bytes.NewReader([]byte("new-value")),
				int64(len("new-value")), "", ""), opts)