/**
     * Asserts that the argument is not <code>null</code>.
     *
     * @param argName
     *            The name of the argument that must not be {@code null}.
     * @param argValue
     *            The value of the argument.
     * @throws NullArgumentException
     *             If the argument is <code>null</code>.
     */
    public static void assertArgumentNotNull(final String argName, final Object argValue) {

  public @Nullable V putIfAbsent(K key, V value) {
    return delegate().putIfAbsent(key, value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean remove(@Nullable Object key, @Nullable Object value) {
    return delegate().remove(key, value);
  }

  @CanIgnoreReturnValue
  @Override
  public @Nullable V replace(K key, V value) {
    return delegate().replace(key, value);
  }

  @CanIgnoreReturnValue

    while (sizeRemaining > 0) {
      // The JVM will return interned values for small ints.
      Integer value = random.nextInt(1000) + 128;
      int count = min(random.nextInt(10) + 1, sizeRemaining);
      sizeRemaining -= count;
      hashMultiset.add(value, count);
      linkedHashMultiset.add(value, count);
      treeMultiset.add(value, count);
    }

    // TODO(kevinb): convert to assert once benchmark tests enable asserts by default

            public static final String CRAWL_ORDER = "crawl.order";
        }

        // meta.*
        // meta.<field>=<value>

        // value.*
        // value.<field>=<value>

        // script.*
        // script.<field>=<value>

        // field.*
        // field.<field>=<value>
    }

    }

    /**
     * Converts a wildcard value to lowercase if configured to do so.
     *
     * @param value The wildcard value to potentially convert
     * @return The value in lowercase if lowercaseWildcard is true, otherwise the original value
     */
    protected String toLowercaseWildcard(final String value) {
        if (lowercaseWildcard) {
            return value.toLowerCase(Locale.ROOT);
        }

     * @return the property value, or the default value if not found
     */
    public static String getProperty(String key, String defaultValue) {
        return System.getProperty(key, defaultValue);
    }

    /**
     * Returns the system environment variable value for the specified key.
     *
     * @param key the environment variable key
     * @return the environment variable value, or null if not found

    }

    /**
     * Quotes a string value if it contains spaces.
     * Multi-word values are wrapped in double quotes with internal quotes replaced by spaces.
     *
     * @param value the string value to quote
     * @return the quoted string if it contains spaces, otherwise the original value
     */
    protected String quote(final String value) {
        if (value.split("\\s").length > 1) {

            final Object value = sourceArray[i].get(FieldNames.ARRAY_VALUE);
            if (value != null) {
                valueArray[i] = value.toString();
            }
        }
        return valueArray;
    }

    /**
     * Add a value.
     * @param key Key
     * @param value Value
     */
    public void add(final String key, final Object value) {
        if (logger.isDebugEnabled()) {

  void clear();

  /**
   * Associates the specified value with the specified keys. If the table already contained a
   * mapping for those keys, the old value is replaced with the specified value.
   *
   * @param rowKey row key that the value should be associated with
   * @param columnKey column key that the value should be associated with
   * @param value value to be associated with the specified keys

    public ImmutableValueGraph.Builder<N, V> putEdgeValue(N nodeU, N nodeV, V value) {
      mutableValueGraph.putEdgeValue(nodeU, nodeV, value);
      return this;
    }

    /**
     * Adds an edge connecting {@code endpoints} if one is not already present, and sets a value for
     * that edge to {@code value} (overwriting the existing value, if any).
     *